## Etymology
From proficient (from Latin proficiens, present participle of proficere 'to make progress, accomplish', from pro- 'forward' + facere 'to make, do') + the suffix -cy.

## AI Etymology
Proficiency comes from proficient (from Latin proficiens, present participle of proficere 'to make progress, accomplish', from pro- 'forward' + facere 'to make, do') + the suffix -cy. The historical chain includes Latin proficere and Latin facere. The quoted older senses, "to make progress, accomplish", "forward", and "to make, do", supply the semantic anchors for proficiency. The formation is best read as suffixal, compound, participial, and borrowed: the word proficiency carries its older form-history into a compact English lexical shape. In present English it is used as a noun, "a high degree of skill or competence". Related English forms include proficient, profit, and efficient. The result is a noun whose etymology preserves both the older form and the later English specialization.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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