involuntary
UK[ɪnˈvɒlənt(ə)ri]US[ɪnˈvɑːlənteri]
adj
done without conscious control or intention
adj
done against someone's will
Morpheme Breakdown
in
volunt
ary
in
not
volunt
will
ary
adjective suffix
Etymology
the word involuntary is a direct borrowing from late latin involuntarius, which itself is built from the classical latin components. the prefix in- negates the core element volunt-, derived from voluntas meaning "will" or "free choice". the suffix -arius forms an adjective. thus, the literal construction is "pertaining to being without will". this elegantly captures the two modern nuances: actions performed without conscious will, such as a reflex, and actions imposed against one's conscious will, such as forced service. the root voluntas is linked to the verb velle (to wish), tracing back to the proto-indo-european root welh₁- (to wish, to will), which also gives us words like "volition" and "volunteer".
Analysis
Structure: in (not) + volunt (will) + ary (adjective suffix)
- in: a latin prefix meaning "not" or "without".
- volunt: from latin voluntas meaning "will, free will, choice".
- ary: a latin-derived suffix forming adjectives meaning "pertaining to" or "connected with".
Examples
she gave an involuntary shudder when she heard the sudden noise.
involuntary manslaughter is a serious criminal charge.
the government's policy led to the involuntary relocation of many families.