Princeton's WordNet
extraneousnessnoun
unrelatedness by virtue of falling outside the matter at hand
Wiktionary
extraneousnessnoun
Synonyms:
extrinsicness, inessentialness, irrelevantnessextraneousnessnoun
The state of being extraneous or inessential and irrelevant; extrinsic.Synonyms:
irrelevantness, inessentialness, extrinsicness
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