aptness, n. appropriateness, [pertinence]; [intelligence], cleverness.
arbitrary, a. [tyrannical], [absolute], [imperious], [unrestrained], [dictatorial].
arbitrator, n. arbiter, [umpire], [judge], [referee].
arbor, n. [bower], pergola, [trellis].
arch, a. [greatest], [chief]; [cunning], [roguish], mischievous, [sportive].
arch, v. [vault], concamerate.--n. concameration, fornication.
archæologist, n. antiquary, [antiquarian], paleologist.
archæology, n. paleology.
archbishop, n. primate, metropolitan.
arched, a. [vaulted], camerated, forniciform, fornicated.