[きりゃくじゅうおう, kiryakujuuou](n, adj-no) very resourcefully using tactics adapting oneself to the requirements of the moment; playing it by ear; acting according to circumstances[Add to Longdo]
[さいきはつらつ, saikihatsuratsu](adj-t, adv-to) resourceful and quick-witted; showing a flash of brilliance; have a keen (sparkling) intellect[Add to Longdo]
[せきしゅくうけん, sekishukuuken](n) barehanded; having no wealth or position to rely on (aside from one's own resourcefulness) (when embarking on something)[Add to Longdo]