語源的には習慣、habと同じで、habの語源は「住む」「所有する」「できる」。接尾辞-ableはほぼ完全に重なる。
Able-whackets - A popular sea-game with cards, in which the loser is beaten over the palms of the hands with a handkerchief tightly twisted like a rope. Very popular with horny-fisted sailors. [Smyth, "Sailor's Word-Book," 1867]