[さい, sai] (suf) (1) -years-old; (2) (才 only) ability; gift; talent; aptitude; genius; (P) #321
[すじ, suji] (n) (1) muscle; tendon; sinew; (2) vein; artery; (3) fiber; fibre; string; (4) line; stripe; streak; (5) (See 筋が通る) reason; logic; (6) plot; storyline; (7) lineage; descent; (8) school (e.g. of scholarship or arts); (9) aptitude; talent; (10) source (of information, etc.); circle; channel; (11) well-informed person (in a transaction); (12) logical move (in go, shogi, etc.); (13) ninth vertical line (shogi); (14) seam on a helmet; (15) (abbr) (See 筋蒲鉾) gristly fish paste (made of muscle, tendons, skin, etc.); (16) (arch) social position; status; (n-suf, n, adj-no) (17) on (a river, road, etc.); along; (suf, ctr) (18) counter for long thin things; (19) (arch) (Edo period) counter for hundreds of mon (obsolete unit of currency); (P) #3255
[りこん, rikon] (adj-na, n) (obsc) intelligence; cleverness; innate aptitude #13688
[したじ, shitaji] (n) groundwork; foundation; inclination; aptitude; elementary knowledge of; grounding in; prearrangement; spadework; signs; symptoms; first coat of plastering; soy; (P) #17483
[おんがくのそしつ, ongakunososhitsu] (n) aptitude for music
[てすじ, tesuji] (n) lines of the palm; aptitude; handwriting; apt move (in a go or shogi game); standard method
[てきせい, tekisei] (n) aptitude; (P)
[てきせいけんさ, tekiseikensa] (n) aptitude test
[てきひ, tekihi] (n) propriety; fitness; aptitude
[べいこくだいがくにゅうがくきょうつうしけん, beikokudaigakunyuugakukyoutsuushiken] (n) scholastic aptitude test; SAT; entrance test for US universities