1. iron out, put right, straighten out

settle or put right

Example Sentences:
'we need to iron out our disagreements'

• iron out
• put right

2. disentangle, straighten out, unsnarl

extricate from entanglement

Example Sentences:
'Can you disentangle the cord?'

• disentangle
• unsnarl

3. reform, see the light, straighten out

change for the better

Example Sentences:
'The lazy student promised to reform'
'the habitual cheater finally saw the light'

• reform
• see the light

4. straighten, straighten out

make straight

• straighten

5. clear, clear up, crystalise, crystalize, crystallise, crystallize, elucidate, enlighten, illuminate, shed light on, sort out, straighten out

make free from confusion or ambiguity; make clear

Example Sentences:
'Could you clarify these remarks?'
'Clear up the question of who is at fault'

• clear
• clear up
• crystalise
• crystalize
• crystallise
• crystallize
• elucidate
• enlighten
• illuminate
• shed light on
• sort out

6. clean up, neaten, square away, straighten, straighten out, tidy, tidy up

put (things or places) in order

Example Sentences:
'Tidy up your room!'

• clean up
• neaten
• square away
• straighten
• tidy
• tidy up