APT

(Literally, "fitted"): Applied to one distinguished for readiness in meeting demands of some special situation, or emergency. For this, there is no specific Biblical word in either Old Testament or New Testament. It occurs always in the English translations in paraphrases, as "apt for war" (2 Kings 24:16), "apt to teach," Greek "didaktikos" (1 Timothy 3:2; 2 Timothy 2:24).

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.