Princeton's WordNet
question, inquiry, enquiry, query, interrogation(noun)
an instance of questioning
Synonyms:
examination, enquiry, doubtfulness, doubt, head, interrogation, query, motion, interrogatory, interrogative sentence, interrogative, question, research, inquiry, dubiousnessinquiry, enquiry, research(noun)
a search for knowledge
Synonyms:
enquiry, inquiry, interrogation, query, research, questioninquiry, enquiry(noun)
a systematic investigation of a matter of public interest
Synonyms:
enquiry, inquiry, interrogation, query, research, question
PPDB, the paraphrase database
List of paraphrases:
inquiry, enquiries, investigation, survey, research, consultation
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