WordWeb Online

1. (of a person) stop bending, stand straight up
   - unbend
    
2. Make straight
   - straighten out
    
3. Get up from a sitting or slouching position
   "The students straightened when the teacher entered"
    
4. Put (things or places) in order
   "straighten up your room!"
   - tidy, tidy up, clean up, neaten, straighten out, square away
    
5. Make flat by unrolling
   "straighten the big map"
   - roll out
    
6. Make straight or straighter
   "Straighten this post"; "straighten hair"

Sounds like: straiten

Derived forms: straightened, straightens, straightening

See also: straighten out, straightener

Type of: alter, arrange, change, change posture, disentangle, modify, order, set up, unwind

Antonym: bend