Verb straighten out has 6 senses
  1. iron out, straighten out, put right - settle or put right; "we need to iron out our disagreements"
    --1 is one way to better, improve, amend, ameliorate, meliorate
    Sample sentence:
    Somebody ----s something
  2. disentangle, unsnarl, straighten out - extricate from entanglement; "Can you disentangle the cord?"
    --2 is one way to order
    Sample sentence:
    They straighten out their hair
  3. reform, straighten out, see the light - change for the better; "The lazy student promised to reform"; "the habitual cheater finally saw the light"
    --3 is one way to better, improve, ameliorate, meliorate
    Sample sentences:
    Something ----s
    Somebody ----s
  4. straighten, straighten out - make straight
    --4 is one way to change, alter, modify
    Sample sentences:
    Something ----s
    Somebody ----s
    Somebody ----s something
    Something ----s something
  5. clear, clear up, shed light on, crystallize, crystallise, crystalize, crystalise, straighten out, sort out, enlighten, illuminate, elucidate - make free from confusion or ambiguity; make clear; "Could you clarify these remarks?"; "Clear up the question of who is at fault"
    --5 is one way to clarify, clear up, elucidate
    Sample sentence:
    Somebody ----s something
  6. tidy, tidy up, clean up, neaten, straighten, straighten out, square away - put (things or places) in order; "Tidy up your room!"
    --6 is one way to order
    Sample sentence:
    Somebody ----s something
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