Crossword clues for Prove useful 5 letters:AVAILProve usefulAVAILProve useful toUTILEProving to be usefulCAMEINHANDY*Proved useful (In this clue's answer, note the first 2 letters + the last 3)BEOFSERVICEProve usefulDNATESTIt might be used to prove one's innocence