You don't know the half ___ 4 letters

Crossword clues for You don't know the half ___ 4 letters

Answer	Clue
PSAS	Knowing is half the battle and others
OFIT	You don't know the half ___
PSAS	G.I. Joe's "Knowing is half the battle" spots, e.g.
PSAS	Spots ending with the line "And knowing is half the battle!," on the eighties TV show "G.I. Joe"
PSA	Knowing is half the battle spot, in brief
GIJOE	Knowing is half the battle cartoon