agile
ag.ile \'aj-*l\ \-*(l)-le-\ aj [MF, fr. L agilis, fr. agere to drive, act - more at AGENT] 1: readily able to move quickly and easily : NIMBLE 2: mentally quick and resourceful and ease in physical or mental actions; NIMBLE stresses lightness and swiftness of action or thought; BRISK suggests liveliness, animation, or vigor of movement sometimes with a suggestion of hurry; SPRY stresses an ability for quick action that is unexpected because of age or known infirmity - ag.ile.ly av SYN syn NIMBLE, BRISK, SPRY: AGILE implies dexterity
Webster's English Dictionary