knock for loop (verb) attack: assault physically
Sinonime: apologetic, attritional, chastened, compunctious, conscience-stricken, contrite, guilt-ridden, mournful, penitent, regretful, repentant, rueful, sad, self-reproachful, sorrowful, sorry*
Antonime: aid,
defend,
protect,
resist,
retreat,
shelter,
shield,
submit,
support,
surrender,
sustain