| intentional(adjective, free, keen, happy, agreeable) |
| involuntary(adjective, simple, natural, casual, impulsive) |
| irresistible(adjective, simple, natural, casual, impulsive) |
| like-minded(adjective, keen, happy, agreeable, enthusiastic) |
| minded |
| natural(adjective, simple, casual, impulsive, willing) |
| nonmandatory |
| not asked(expression, adjective, willing, arrogant, freely) |
| obedient(adjective, keen, happy, agreeable, enthusiastic) |
| off-the-cuff(adjective, simple, natural, casual, impulsive) |
| off top of head(expression, adjective, idiom, simple, natural) |
| offered |
| offhand(adjective, simple, natural, casual, impulsive) |
| one(adjective, keen, happy, agreeable, enthusiastic) |
| opted(adjective, free, deliberate, natural, witting) |
| original |
| overbearing(adjective, willing, arrogant, voluntary, unwelcome) |
| pleased(adjective, keen, happy, agreeable, enthusiastic) |
| predetermined |
| predisposed(adjective, keen, happy, agreeable, enthusiastic) |