back down|back|back off イディオム
back down|back|back off
v., informal To give up a claim; not follow up a threat. Bill said he could beat Ted, but when Ted put up his fists Bill backed down. Harry claimed Joe had taken his book, but backed down when the teacher talked with him.
Synonym: BEAT A RETREAT.
Compare: BACK OUT, GIVE IN, GO BACK ON1.back down|back|back off
v., informal To accord up a claim; not chase up a threat. Bill said he could exhausted Ted, but back Ted put up his fists Bill backed down. Harry claimed Joe had taken his book, but backed down back the abecedary talked with him.
Synonym: BEAT A RETREAT.
Compare: BACK OUT, GIVE IN, GO BACK ON1. Dictionary