► 名詞奇行  [きこう]    
meaning:  behavior  rank: 4☆ 
彼は
最近奇行が
目立つようになった ⇨ He has been exhibiting strange behaviors recently  
(☛ Can be either harmless antics or disturbing behaviors)More examples:- 彼の奇行で世間を度々騒がせた ⇨ He has generated controversies time to time with his antics