| matter-of-fact(adjective, open, free, honest, plain) |
| naive(adjective, open, direct, free, easy) |
| no lie(expression, adjective, direct, honest, straightforward) |
| off-the-cuff(adjective, simple, natural, casual, impulsive) |
| off top of head(expression, adjective, idiom, simple, natural) |
| offhand(adjective, simple, natural, casual, impulsive) |
| on the level(expression, idiom, adverb, straight, frankly) |
| on the line(expression, idiom, adverb, straight, frankly) |
| open(adjective, free, honest, plain, straightforward) |
| openly(adverb, straight, directly, honestly, frankly) |
| outright(adjective, open, direct, free, easy) |
| outspoken(adjective, open, free, honest, plain) |
| plain(adjective, open, free, honest, straightforward) |
| plain-spoken(adjective, open, free, honest, plain) |
| plainly(adverb, straight, directly, honestly, frankly) |
| plainspoken(adjective, open, honest, plain, straightforward) |
| scrupulous(adjective, open, free, honest, plain) |
| simple(adjective, honest, natural, straightforward, casual) |
| sincere(adjective, open, free, honest, plain) |
| spontaneous(adjective, impulsive, willing, unforced, unprompted) |