spontaneous.
Self-directed; happening or acting without external cause or instigation; proceeding from natural feeling, temperament, or momentary impulse.
Meaning & usage
Self-directed; happening or acting without external cause or instigation; proceeding from natural feeling, temperament, or momentary impulse.
He made a spontaneous offer of help.
Done by one's own free choice, or without planning.
Controlled and directed internally; self-active; spontaneous movement characteristic of living things.
Produced without being planted or without human cultivation or labor.
Sudden, without warning.
Said or done without prior planning or prior writing.
He made spontaneous remarks in the court, after being asked an unexpected question.
Where this word comes from
Etymology tree Latin sponte Proto-Indo-European *-nós Proto-Italic *-nos Proto-Italic *-ānos Latin -ānus Proto-Indo-European *-éyos Proto-Italic *-ejos Proto-Italic *-eos Latin -eus Latin -āneus Late Latin spontāneuslbor. English spontaneous Learned borrowing from Late Latin spontāneus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.