different between sudden vs involuntary

English

Etymology

From Middle English sodeyn, sodain, from Anglo-Norman sodein, from Old French sodain, subdain (“immediate, sudden”), from Vulgar Latin *subit?nus (“sudden”), from Latin subit?neus (“sudden”), from subitus (“sudden", literally, "that which has come stealthily”), originally the past participle of sub?re (“to come or go stealthily”), from sub (“under”) + ?re (“go”). Doublet of subitaneous.

Pronunciation

• IPA^(key): /?s?d?n/, [?s?dn?]
• Rhymes: -?d?n
• Hyphenation: sud?den

Adjective

sudden (comparative more sudden, superlative most sudden)

1. Happening quickly and with little or no warning.

2. (obsolete) Hastily prepared or employed; quick; rapid.
3. (obsolete) Hasty; violent; rash; precipitate.

Synonyms

• (happening quickly): abrupt, precipitous, subitaneous; see also Thesaurus:sudden
• (hasty, rash): hotheaded, impetuous, impulsive; see also Thesaurus:reckless

Antonyms

• (happening quickly): gradual; see also Thesaurus:gradual
• (all): unsudden

Derived terms

Translations

Adverb

sudden (comparative more sudden, superlative most sudden)

1. (poetic) Suddenly.

Noun

sudden (plural suddens)

1. (obsolete) An unexpected occurrence; a surprise.

Derived terms

• all of a sudden
• all of the sudden
• of a sudden
• on a sudden
• upon a sudden

Translations

Further reading

• sudden in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• sudden in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• sudden at OneLook Dictionary Search

English

Etymology

From in- +? voluntary, from Late Latin involontarius, from in + volontarius.

Pronunciation

• (General American) IPA^(key): /?n?v?l.?n?t?.?i/
• (Received Pronunciation) IPA^(key): /?n?v?l.?n.t?i/
• Hyphenation: in?vol?un?ta?ry

Adjective

involuntary (comparative more involuntary, superlative most involuntary)

1. Without intention; unintentional.
2. Not voluntary or willing; contrary or opposed to explicit will or desire; unwilling.

Synonyms

• (without intention): inadvertent, unintended; see also Thesaurus:unintentional
• (not voluntary): unbewised, unvoluntary; see also Thesaurus:compulsory

Derived terms

• involuntarily
• involuntariness
• involuntary manslaughter

Related terms

• volunteer

Translations

References

• involuntary in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• involuntary in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.