"All You __ Is Love"; 1967 song

I believe the answer is:

need

(Other definitions for need that I've seen before include "Desideratum" , "destitute state" , "'miss'" , "Require; want" , "What's lacking" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.