Synonyms for impenetrable
ɪmˈpɛn ɪ trə bəlim·pen·e·tra·ble

WiktionaryRate these synonyms:0.0 / 0 votes

1. impenetrableadjective

   Antonyms:
   penetrable

2. impenetrableadjective

   The fortress is impenetrable, so it cannot be taken.

   Antonyms:
   penetrable

3. impenetrableadjective

   Business jargon makes this document impenetrable, I can't understand it.

   Antonyms:
   penetrable

English Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. impenetrable

   Synonyms:
   concealed, covert, dark, hidden, impalpable, imperceptible, invisible, latent, obscure, occult, secret, undiscovered, unimagined, unknown, unseen, unthought-of

   Antonyms:
   apparent, clear, conspicuous, discernible, distinct, evident, glaring, indubitable, manifest, obvious, open, overt, palpable, patent, perceptible, plain, tangible, transparent, unmistakable, visible

Princeton's WordNetRate these synonyms:5.0 / 3 votes

1. impenetrableadjective

   not admitting of penetration or passage into or through

   "an impenetrable fortress"; "impenetrable rain forests"

   Synonyms:
   dense, heavy

   Antonyms:
   comprehendible, comprehensible, penetrable, thin

2. dense, heavy, impenetrableadjective

   permitting little if any light to pass through because of denseness of matter

   "dense smoke"; "heavy fog"; "impenetrable gloom"

   Synonyms:
   laboured, sullen, laborious, heavy, dull, overweight, toilsome, slow, intemperate, sound, dumb, wakeless, dense, grueling, with child(p), threatening, grave, profound, lowering, cloggy, heavy(a), large(p), clayey, enceinte, grievous, fleshy, weighed down, hard, weighty, gruelling, expectant, lumbering, ponderous, backbreaking, sonorous, great(p), arduous, operose, dim, heavy(p), big(a), labored, punishing, thick, gravid, big(p), obtuse, leaden

   Antonyms:
   comprehendible, penetrable, thin, comprehensible

3. impenetrableadjective

   impossible to understand

   "impenetrable jargon"

   Synonyms:
   dense, heavy

   Antonyms:
   penetrable, comprehensible, thin, comprehendible

Dictionary of English SynonymesRate these synonyms:0.0 / 0 votes

1. impenetrableadjective

   Synonyms:
   not to be penetrated, not to be pierced

Synonyms, Antonyms & Associated WordsRate these synonyms:0.0 / 0 votes

1. impenetrableadjective

   Synonyms:
   impervious, imperforable

PPDB, the paraphrase databaseRate these paraphrases:0.0 / 0 votes

1. List of paraphrases for "impenetrable":

   inscrutable, incomprehensible, unfathomable, opaque

How to pronounce impenetrable?

How to say impenetrable in sign language?

Usage in printed sourcesFrom: 

1. [["1524","1"],["1563","1"],["1590","12"],["1624","1"],["1634","3"],["1642","1"],["1647","1"],["1648","1"],["1650","1"],["1655","1"],["1657","2"],["1665","1"],["1667","1"],["1671","1"],["1673","3"],["1675","2"],["1676","1"],["1677","4"],["1679","2"],["1683","3"],["1684","4"],["1685","6"],["1686","5"],["1687","1"],["1690","1"],["1691","2"],["1693","2"],["1694","4"],["1696","1"],["1697","5"],["1698","8"],["1699","3"],["1700","6"],["1701","7"],["1702","5"],["1703","4"],["1704","23"],["1705","13"],["1706","10"],["1707","16"],["1708","4"],["1709","7"],["1710","3"],["1711","5"],["1712","15"],["1713","7"],["1714","6"],["1715","11"],["1716","15"],["1717","5"],["1718","9"],["1719","6"],["1720","19"],["1721","3"],["1722","14"],["1723","19"],["1724","14"],["1725","18"],["1726","16"],["1727","20"],["1728","25"],["1729","63"],["1730","36"],["1731","49"],["1732","28"],["1733","6"],["1734","38"],["1735","22"],["1736","38"],["1737","39"],["1738","26"],["1739","30"],["1740","21"],["1741","14"],["1742","45"],["1743","31"],["1744","57"],["1745","36"],["1746","35"],["1747","41"],["1748","49"],["1749","25"],["1750","107"],["1751","39"],["1752","42"],["1753","57"],["1754","61"],["1755","57"],["1756","28"],["1757","56"],["1758","59"],["1759","106"],["1760","62"],["1761","61"],["1762","58"],["1763","74"],["1764","48"],["1765","43"],["1766","83"],["1767","61"],["1768","109"],["1769","91"],["1770","70"],["1771","85"],["1772","58"],["1773","61"],["1774","75"],["1775","98"],["1776","140"],["1777","156"],["1778","138"],["1779","92"],["1780","107"],["1781","95"],["1782","100"],["1783","119"],["1784","109"],["1785","106"],["1786","98"],["1787","209"],["1788","242"],["1789","173"],["1790","216"],["1791","171"],["1792","203"],["1793","168"],["1794","289"],["1795","256"],["1796","305"],["1797","194"],["1798","248"],["1799","309"],["1800","416"],["1801","438"],["1802","515"],["1803","474"],["1804","608"],["1805","535"],["1806","620"],["1807","577"],["1808","524"],["1809","624"],["1810","510"],["1811","708"],["1812","672"],["1813","700"],["1814","681"],["1815","786"],["1816","708"],["1817","914"],["1818","952"],["1819","957"],["1820","1036"],["1821","940"],["1822","1056"],["1823","966"],["1824","1276"],["1825","1411"],["1826","1125"],["1827","1274"],["1828","1277"],["1829","1365"],["1830","1127"],["1831","1510"],["1832","1657"],["1833","1485"],["1834","1527"],["1835","1671"],["1836","1598"],["1837","1514"],["1838","1613"],["1839","1282"],["1840","1687"],["1841","1580"],["1842","1332"],["1843","1420"],["1844","1655"],["1845","1844"],["1846","1980"],["1847","1924"],["1848","1900"],["1849","1992"],["1850","2317"],["1851","1977"],["1852","2386"],["1853","2474"],["1854","2871"],["1855","2570"],["1856","3012"],["1857","2444"],["1858","2102"],["1859","2342"],["1860","2454"],["1861","1707"],["1862","1591"],["1863","1611"],["1864","1832"],["1865","1977"],["1866","2142"],["1867","2053"],["1868","2094"],["1869","2004"],["1870","1993"],["1871","1972"],["1872","1969"],["1873","2255"],["1874","2408"],["1875","2438"],["1876","2481"],["1877","2175"],["1878","2205"],["1879","2030"],["1880","2691"],["1881","2720"],["1882","2817"],["1883","3375"],["1884","2835"],["1885","2957"],["1886","2378"],["1887","2740"],["1888","2665"],["1889","2519"],["1890","2852"],["1891","2603"],["1892","2894"],["1893","2963"],["1894","2913"],["1895","2934"],["1896","3564"],["1897","3294"],["1898","3658"],["1899","4116"],["1900","4764"],["1901","4486"],["1902","4085"],["1903","4154"],["1904","4413"],["1905","3895"],["1906","3910"],["1907","4339"],["1908","3808"],["1909","3622"],["1910","4036"],["1911","4007"],["1912","3748"],["1913","3691"],["1914","3544"],["1915","2836"],["1916","2575"],["1917","3014"],["1918","2408"],["1919","2751"],["1920","3262"],["1921","3018"],["1922","3319"],["1923","3198"],["1924","3066"],["1925","3741"],["1926","2861"],["1927","3145"],["1928","3037"],["1929","2881"],["1930","2992"],["1931","2884"],["1932","2492"],["1933","2081"],["1934","2566"],["1935","2560"],["1936","2605"],["1937","2597"],["1938","2250"],["1939","2315"],["1940","2100"],["1941","1970"],["1942","1964"],["1943","1899"],["1944","1755"],["1945","2019"],["1946","2502"],["1947","2896"],["1948","2924"],["1949","3202"],["1950","2972"],["1951","3066"],["1952","2849"],["1953","3015"],["1954","3179"],["1955","3435"],["1956","3373"],["1957","3728"],["1958","3772"],["1959","3974"],["1960","4150"],["1961","4754"],["1962","5333"],["1963","5258"],["1964","5109"],["1965","5562"],["1966","6161"],["1967","6590"],["1968","7359"],["1969","7088"],["1970","7546"],["1971","6909"],["1972","6767"],["1973","6588"],["1974","6146"],["1975","6088"],["1976","6472"],["1977","6463"],["1978","6510"],["1979","6464"],["1980","6744"],["1981","6589"],["1982","6889"],["1983","7674"],["1984","7814"],["1985","8115"],["1986","8838"],["1987","9406"],["1988","9858"],["1989","10149"],["1990","10866"],["1991","11084"],["1992","11857"],["1993","11912"],["1994","12540"],["1995","13472"],["1996","13974"],["1997","14107"],["1998","14765"],["1999","16381"],["2000","18483"],["2001","18512"],["2002","20052"],["2003","22678"],["2004","27060"],["2005","24706"],["2006","27475"],["2007","32391"],["2008","49160"]]

Words popularity by usage frequency

How to use impenetrable in a sentence?

1. Lindy Boggs:

   When you’re not in leadership, you don’t have a seat at the table – maybe you have your subcommittee or your committee, something like that – but it almost is impenetrable, and the American people know it. They feel it and that’s why they’re becoming radical in their political expressions.

2. Hugh Cumberland:

   This image of the SWIFT network and the surrounding ecosystem being secure and impenetrable has encouraged complacency.

3. Voltaire:

   There is a wide difference between speaking to deceive, and being silent to be impenetrable.

4. C. S. Lewis:

   Love anything and your heart will be wrung and possibly broken. If you want to make sure of keeping it intact you must give it to no one, not even an animal. Wrap it carefully round with hobbies and little luxuries; avoid all entanglements. Lock it up safe in the casket or coffin of your selfishness. But in that casket--safe, dark, motionless, airless--it will change. It will not be broken; it will become unbreakable, impenetrable, irredeemable. To love is to be vulnerable.

5. Erik Pevernagie:

   Human understanding very often remains enigmatic and motivations impenetrable. Many codes remain unbreakable, unless one has the unconditional key. ( " The unbreakable code " )