| substantial(adjective, material, certain, real, genuine) |
| sure as can be(expression, idiom, really, exactly, positively) |
| sure as hell(expression, idiom, really, exactly, positively) |
| tangible(adjective, solid, material, certain, substantial) |
| true(adjective, open, honest, solid, natural) |
| true-blue(adjective, open, honest, true, straightforward) |
| truly(adverb, really, exactly, positively, certainly) |
| trustworthy(adjective, open, honest, proper, true) |
| truthful |
| twenty-four carat(adjective, honest, true, straightforward, serious) |
| unaffected(adjective, open, honest, true, straightforward) |
| unambiguously(adverb, absolutely, really, exactly, positively) |
| undeniable |
| undesigning(adjective, open, honest, true, natural) |
| undissembled(adjective, open, honest, true, straightforward) |
| unfeigned(adjective, open, honest, proper, true) |
| unpretentious(adjective, open, honest, true, straightforward) |
| unquestionably(adverb, really, exactly, positively, certainly) |
| up-front(adjective, open, honest, true, straightforward) |
| valid(adjective, correct, solid, proper, real) |