► 動詞
切れる [(2)きれる] [頭が切れる] [coll] meaning: intelligent rank: 2
☆ 彼は頭が切れる ⇨ He is very sharp
► 名詞
頭 [(2)あたま] [頭が良い] [coll] meaning: intelligent rank: 1
☆ 彼は頭が良くて運動も出来る ⇨ He is smart and good at sports too
知恵 [(2)ちえ] meaning: intelligent rank: 2
☆ 彼は知恵が足りない ⇨ He doesn’t have enough intelligence, not smart
知性 [(1)ちせい] meaning: intelligent rank: 2
☆ 彼には何の知性も感じない ⇨ I don’t find any intellect in him
知的 [ちてき] meaning: intelligent rank: 2
☆ 知的能力 ⇨ Intellectual abilities
知能 [(1)ちのう] meaning: intelligent rank: 2
☆ 知能指数 ⇨ Intelligence quotient, IQ
秀才 [しゅうさい] meaning: intelligent rank: 3
☆ 彼は小学生の頃から秀才と言われていた ⇨ He was called an extremely smart kid since his elementary school days (☛ Someone who is intelligent AND studies hard, not just relying on natural talent)
インテリ [いんてり] meaning: intelligent rank: 4
☆ 彼はインテリ風だ ⇨ He looks like a intelligent-type
賢者 [(1)けんじゃ] [liter] meaning: intelligent rank: 4
☆ 彼は当時日本一の賢者と讃えられた ⇨ He received acclaim as the wisest man in Japan at the time (☛ Intelligent and morally upright)
知性的 [ちせいてき] meaning: intelligent rank: 4
☆ 彼は知性的な感じがする ⇨ He has an intellectual air
► 形容詞
賢い [(3)かしこい] meaning: intelligent rank: 2
☆ 賢そうな顔をした子供 ⇨ An intelligent-looking child (☛ Usually about children when used for humans)
☆ それは賢い選択だ ⇨ That’s a wise choice (☛ Wise, sensible)
► 形容動詞
知的 [ちてき] meaning: intelligent rank: 2
☆ 彼女は知的な感じがする ⇨ She looks intelligent
賢明 [けんめい] [liter] meaning: intelligent rank: 3
☆ 計画は延期したほうが賢明だ ⇨ It is wise to postpone the project (☛ Wise, sensible)
利口 [りこう] meaning: intelligent rank: 3
☆ まあ、お利口さん ⇨ Oh, how smart you are (☛ Only about children)
☆ 今のうちにこれに投資したほうが利口だ ⇨ It is smart to invest in this now while you can (☛ Smart, astute, if not correct and moral)
聡明 [そうめい] meaning: intelligent rank: 4
☆ 彼女は美人で聡明だ ⇨ She is beautiful and intelligent
利発 [りはつ] meaning: intelligent rank: 4
☆ 利発な子供 ⇨ A smart child (☛ About children)