PERFICIENT

PRONUNCIATION: (puhr-FISH-uhnt)

MEANING: adjective: Accomplishing or achieving desired results; effective.

ETYMOLOGY: From Latin perficere (to accomplish), from per- (thoroughly) + -ficere, a combining form of facere (to make or do). Earliest documented use: 1641.
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PER-FACIENT - through the face

PERDICIENT - perpetually lost

'S PERFECIENT - it doesn't have a flaw