| impavid(strong, tough, bold, spirited, brave) |
| impertinent(adjective, mad, bold, naughty, impudent) |
| imprudent(adjective, careless, wild, bold, thoughtless) |
| impulsive(smart, bold, reckless, courageous, audacious) |
| indomitable(strong, tough, bold, spirited, brave) |
| insolent(adjective, mad, bold, naughty, impudent) |
| irresponsible(adjective, wild, bold, thoughtless, rash) |
| irreverent(adjective, mad, bold, naughty, impudent) |
| lionhearted(strong, tough, noble, bold, spirited) |
| lippy(adjective, mad, bold, naughty, impudent) |
| madcap(adjective, careless, wild, bold, thoughtless) |
| malapert(adjective, mad, bold, naughty, impudent) |
| martial(strong, tough, bold, spirited, brave) |
| naughty(adjective, mad, bold, impudent) |
| necky(adjective, mad, bold, naughty, impudent) |
| obtrusive(smart, bold, impulsive, reckless, courageous) |
| out on a limb(expression, idiom, smart, bold, impulsive) |
| pawky(adjective, mad, bold, naughty, impudent) |
| perk(adjective, mad, bold, naughty, impudent) |
| perky(adjective, mad, bold, naughty, impudent) |