Few discussed before at - Deceptive GRE Words post
Misapprehension - mistaken belief...... (Apprehension on GRE means feeling of worry or fear, other meaning for apprehension is understanding which is considered when considering the meaning of misapprehension).
Enervate - weaken; cause someone to feel drained of energy.
Deference - humble respect ..... (Defer means to put something off to a later time; OR humbly give in to....the latter verb form is kept in mind for the meaning of it as noun).
Confound - confuse
Fatuous - silly and pointless..... (adj form of noun fatuity which means foolishness)
Reproach - accuse of; express disapproval of or disappointment with.
Exorcise - drive an evil spirit from a person or place.
Cleave - stick fast to; become strongly involved with; divide or split .... (Cleaver on the other hand is a noun which means a tool with broad blade, used for chopping meat).
Invigoration - give strength.
Decried - publicly declare to be wrong.
Probity - honesty and decency.
Plaintive - sounding sad and mournful.
Complacent - uncritically satified with yourself. e.g - We must not be complacent about our achievements; there is still a lot to be done.
Complaisant - ready to please; obliging.; willing to please others or to accept their behaviour without protest.
Commensurate - corresponding or in proportion.