no rhyme or reason - if there is no rhyme or reason why something happens, there is no obvious explanation for it.

Changes have been made to the text without rhyme or reason.

• cheap and cheerful
• cheap and nasty
• Cheap at half the price!
• cheap shot
• cheat on
• cheat on someone
• check in
• check into
• check into somewhere
• check in with
• check in with someone
• check off
• check off something
• check out
• check out someone
• check out something
• checks and balances
• check up on
• check up on someone
• check yourself into
• check yourself into somewhere
• cheek by jowl
• cheer someone to the echo
• cheer to the echo
• cheer up