unpremeditated
/ˌʌnpriˈmɛdɪteɪtɪd/
adjective
- Done without planning or forethought; spontaneous.
- He made an unpremeditated decision to quit his job and travel the world.
- Her unpremeditated speech moved the audience to tears.
- The fight was an unpremeditated reaction to the insult.
Synonyms