straighten

Verb

• make straight or straighter
  • Straighten this post
    
  • straighten hair
    

• straighten by unrolling
  • roll out the big map
    

• put (things or places) in order
  • Tidy up your room!
    

• get up from a sitting or slouching position
  • The students straightened when the teacher entered
    

• make straight

• straighten up or out; make straight

Related words

• Synonyms: 
  roll out , tidy , tidy up , clean up , neaten , straighten out , square away , unbend
• Antonyms: 
  bend , flex