Proficient rhymes with:
beneficent, coefficient, deficient, efficient, inefficient, insufficient, self-sufficient, sufficient, beneficent, coefficient, deficient, efficient, inefficient, insufficient, omniscient, self-sufficient, sufficient
beneficent, coefficient, deficient, efficient, inefficient, insufficient, self-sufficient, sufficient, beneficent, coefficient, deficient, efficient, inefficient, insufficient, omniscient, self-sufficient, sufficient