Synonyms for Impetuous

Synonyms starting with letter O

• overhasty

  impulsive
• out of the blue
• offhand
• off-the-cuff
• overzealous
• obstreperous
• on the make
• on pins and needles
• outrageous
• on the double
• oblivious
• out to lunch
• off guard
• overwrought
• out of control
• on the rampage
• ornery
• opinionated
• out of line
• off top of head
• obstinate
• off the hip
• off the top of head
• overadventurous
• open
• out on limb
• off deep end
• off-guard
• out-of-line
• out-to-lunch
• obsessive
• on a short fuse
• overexcited
• over-the-top
• off your own bat
• overbold
• overconfident