DEFTEST

Adjective

deftest

superlative form of deft: most deft

Source: Wiktionary

DEFT

Deft, a. Etym: [OE. daft, deft, becoming, mild, gentle, stupid (cf. OE. daffe, deffe, fool, coward), AS. dæft (in derivatives only) mild, gentle, fitting, seasonable; akin to dafen, gedafen, becoming, fit, Goth. gadaban to be fit. Cf. Daft, Daff, Dapper.]

Definition: Apt; fit; dexterous; clever; handy; spruce; neat. [Archaic or Poetic] "The deftest way." Shak. "Deftest feats." Gay. The limping god, do deft at his new ministry. Dryden. Let me be deft and debonair. Byron.

Source: Webster’s Unabridged Dictionary 1913 Edition