incautious
adjective
1. lacking in caution
- an incautious remark
- incautious talk
Similar word(s): adventuresome, adventurous, careless, brainish, hotheaded, impetuous, impulsive, madcap, tearaway
2. carelessly failing to exercise proper caution
- an incautious step sent her headlong down the stairs
Similar word(s): careless