| persistent(adjective, strong, tough, flat, firm) |
| physical(adjective, solid, material, certain, substantial) |
| plumb(adjective, direct, smooth, right, flat) |
| praiseworthy(adjective, feature, characteristic, honor, detail) |
| proven(adjective, sound, reasonable, certain, proper) |
| punctilious(adjective, sound, correct, right, honest) |
| responsible(adjective, good, strong, honest, sensible) |
| rigorous(noun, adjective, correct, right, appropriate) |
| stable(adjective, good, strong, smooth, right) |
| tenacious(adjective, strong, firm, definite, fixed) |
| true-blue(adjective, good, close, strong, open) |
| true blue(expression, idiom, honest, fair, proper) |
| truly(adverb, assent) |
| truthfully(adverb, accurately, honestly) |
| typical(adjective, correct, right, exact, real) |
| undeviating(adjective, strong, direct, smooth, right) |
| undistorted(adjective, close, smooth, correct, right) |
| unqualified(adjective, strong, complete, right, flat) |
| unvarnished(adjective, honest, exact, real, truthful) |
| wholehearted(adjective, person, open, warm, honest) |