competency (n.)youdaoicibaDictYouDict[competency 词源字典]
1590s, "rivalry;" c. 1600, "sufficiency to satisfy the wants of life," from Latin competentia "meeting together, agreement, symmetry," from competens, present participle of competere (see compete). Meaning "sufficiency of qualification" is recorded from 1797.[competency etymology, competency origin, 英语词源]