JLPT N1 i- and na-adjectives — nuanced and formal descriptors · JLPT N1

• 著しいいちじるしいremarkable, striking, conspicuous
• 紛らわしいまぎらわしいconfusing, misleading, easily mistaken
• 煩わしいわずらわしいtroublesome, bothersome, complicated
• 顕著けんちょnotable, marked, striking (na-adj)
• 速やかすみやかspeedy, prompt, swift (na-adj)
• 円滑えんかつsmooth, harmonious (na-adj)
• 切実せつじつacute, pressing, earnest (na-adj)
• 厳かおごそかsolemn, grave, dignified (na-adj)
• 希薄きはくthin, sparse, lacking (e.g. interest) (na-adj)
• 頑なかたくなstubborn, obstinate, inflexible (na-adj)
• 巧妙こうみょうskillful, clever, ingenious (na-adj)
• 気軽きがるcarefree, lighthearted, casual (na-adj)
• 粗末そまつcrude, plain, shabby; wasteful (na-adj)
• 妥当だとうvalid, proper, reasonable, appropriate (na-adj)
• 膨大ぼうだいenormous, vast, huge (na-adj)
• 緩やかゆるやかgentle, gradual, loose, lenient (na-adj)
• 潔いいさぎよいgraceful (in defeat), manly, pure, resolute
• 甚だしいはなはだしいextreme, excessive, terrible
• 脆いもろいfragile, brittle, frail
• 切ないせつないpainful, heartrending, trying (emotionally)