Affable (friendly): Easy to approach and pleasant in manner.
Asceticism (self-discipline): Severe self-control and rejection of indulgence.
Belligerent (hostile): Aggressive and ready to fight.
Charming (pleasant): Naturally attractive in behavior or speech.
Cogent (convincing): Logically clear and persuasive.
Conjecture (assumption): Opinion based on incomplete evidence.
Curmudgeon (grumpy): Bad-tempered, usually older, person.
Discernment (judgment): Keen insight or good perception.
Dogmatic (rigid): Treating opinions as undeniable truth.
Infallible (perfect): Incapable of error or failure.
Infatuated (obsessed): Briefly but intensely admiring.
Impetus (momentum): Driving force behind an action.
Obsequious (servile): Overly submissive to please authority.
Petulant (sulky): Irritable over minor issues.
Pontificate (preachy): Speak pompously or assertively.
Pugnacious (combative): Quick to argue or fight.
Pragmatic (practical): Focused on effectiveness over ideals.
Premise (foundation): Core assumption supporting reasoning.
Quixotic (idealistic): Unrealistically optimistic or visionary.