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involuntary
certainly
ration

in·vol·un·tar·y

involuntary

 
pronunciation:
ihn va ln teI ri
features:
Word Explorer, Word Parts
part of speech: adjective
definition 1: not caused or decided by one's own choice, will, or wish.
During a war, military duty is often involuntary.
synonyms:
compulsory
antonyms:
voluntary
similar words:
automatic, imposed
definition 2: not on purpose; without conscious control; automatic.
Breathing is an involuntary action.
synonyms:
automatic, reflex, unconscious
derivations: involuntarily (adv.), involuntariness (n.)
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Word Parts  About this feature
The word involuntary contains the following parts:
vol Latin root that means wish, intention, will
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-ary1 Latin adjective-forming suffix that means like, of, related to
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The suffix -ary1 attaches to Latin roots (e.g., primary , literary ) and to nouns (e.g., cautionary, fragmentary), forming adjectives.