Ant. Alliance, co-partnership.
Complacent. Pleased, satisfied, contented, amiable, pleasant, affable.
Ant. Morose, austere, unmannerly.
Complain. Murmur, grumble, remonstrate, find fault, repine, lament, grieve, expostulate.
Ant. Approve, commend, applaud, congratulate, rejoice.
Complement. Fulfilment, totality, counterpart, supply, correlative.
Ant. Deficit, abatement, deficiency.
Complete, a. Perfect, finished, total, whole, entire; concluded, consummated, ended; adequate, exhaustive, thorough.
Ant. Partial, inadequate, imperfect, unfinished.
Complex. Confused, involved, mixed, entangled, complicated, composite, manifold, mingled, intricate, obscure.