| v. t. | 1. | To free from flexure; to make, or allow to become, straight; to loosen; |
| 2. | A remit from a strain or from exertion; to set at ease for a time; to relax; | |
| 3. | (Naut.) To unfasten, as sails, from the spars or stays to which they are attached for use. | |
| v. i. | 1. | To cease to be bent; to become straight or relaxed. |
| 2. | To relax in exertion, attention, severity, or the like; hence, to indulge in mirth or amusement. |
| Verb | 1. | unbend - straighten up or out; make straight Synonyms: straighten |
| 2. | unbend - unfasten, as a sail, from a spar or a stay | |
| 3. | unbend - free from flexure; "unbend a bow" | |
| 4. | unbend - make less tight; "relax the tension on the rope" Synonyms: relax | |
| 5. | unbend - become less tense, rest, or take one's ease; "He relaxed in the hot tub"; "Let's all relax after a hard day's work" | |
| 6. | unbend - release from mental strain, tension, or formality; "unbend the mind from absorbing too much information" |