unpaired word
Definition - A word whose affixes suggest that it should have an antonym, but which doesn't have one.

For example, the dis in disambiguate suggests that it should have the corresponding antonym *ambiguate; similarly, disconsolate should have the antonym *consolate, and feckless should have the antonym *feckful.

Hence, because the words disambiguate, disconsolate, and feckless don't have corresponding antonyms they are unpaired words.

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