| irresistible(adjective, simple, natural, casual, impulsive) |
| natural(adjective, simple, casual, impulsive, willing) |
| off-the-cuff(adjective, simple, natural, casual, impulsive) |
| off the cuff(expression, adjective, idiom, adverb, informal) |
| off the top of head(expression, adjective, idiom, adverb, informal) |
| offhand(adjective, adverb, simple, natural, casual) |
| simple(adjective, natural, casual, impulsive, willing) |
| spontaneous(adjective, informal, impulsive, willing, snap) |
| spur of the moment(expression, adjective, idiom, adverb, offhand) |
| unartful(adjective, simple, natural, casual, impulsive) |
| unavoidable(adjective, simple, natural, casual, impulsive) |
| unbidden(adjective, simple, natural, casual, impulsive) |
| uncompelled(adjective, simple, natural, casual, impulsive) |
| unconscious(adjective, simple, natural, casual, impulsive) |
| unconstrained(adjective, simple, natural, casual, impulsive) |
| uncontrived(adjective, simple, natural, casual, impulsive) |
| uncontrolled(adjective, simple, natural, casual, impulsive) |
| unforced(adjective, simple, natural, casual, impulsive) |
| unintentional(adjective, simple, natural, casual, impulsive) |
| unplanned(adjective, simple, natural, casual, impulsive) |