Words that Rhyme with proficiency
4 Syllable Words
deficiency, efficiency, sufficiency
5 Syllable Words
inefficiency, self-sufficiency
7 Syllable Words
immunodeficiency
Definition of proficiency
n. The quality of state of being proficient; advance in the acquisition of any art, science, or knowledge; progression in knowledge; improvement; adeptness; as, to acquire proficiency in music.