Synonyms for (adjective) brainish

Synonyms: impetuous, impulsive, hotheaded, brainish, tearaway, madcap

Definition: characterized by undue haste and lack of thought or deliberation

Usage: a hotheaded decision; liable to such impulsive acts as hugging strangers; an impetuous display of spending and gambling; madcap escapades; (`brainish' is archaic)

Similar words: incautious

Definition: lacking in caution

Usage: an incautious remark; incautious talk