instantaneous

adjective
/ˌɪnstənˈteɪniəs/

Meaning

Happening immediately, without any delay.

Example Sentences

The change in temperature was almost instantaneous.

Synonyms

immediate, prompt, quick, rapid, sudden

Antonyms

delayed, slow

Collocations

instantaneous reaction, instantaneous effect, almost instantaneous

Related Vocabularies

not successful in achieving a desired result
Surprisingly impressive or notable; causing shock or surprise.
complete and including everything that is necessary; covering a wide range of topics
having lived for a short time; not old; recent
not achieving desired aims or results; failing to accomplish a purpose
secret; private; intended to be kept secret

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