ユウ  
あそ.ぶ あそ.ばす 
() play
   
あそび (n,n-suf) (1) playing, (2) (uk) play (margin between on and off, gap before pressing button or lever has an effect)
あそびば (n) playground
あそびあいて (n) playmate, playfellow
あそぶ (v5b,vi) (1) to play, to enjoy oneself, to have a good time, (2) to mess about (with alcohol, gambling, philandery, etc.), (3) to be idle, to do nothing, to be unused, (4) to go to (for pleasure or for study), (5) (in baseball) to intentionally throw a ball to lower the batter's concentration
ゆうえんち (n) amusement park
ゆうぎ (n,vs) game, play, sports
ゆうきゅう (n) idle, unused, fallow
ゆうげき (n,vs) raid, shortstop
ゆうげきしゅ (n) shortstop
ゆうぜい (n,vs) election tour, election campaign, stumping
ゆうほ (n,vs) walk, promenade
ゆうぼく (n,vs,adj-no) nomadism
ゆうらん (n,vs) sightseeing

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Etymologies: 中文字譜 : 説文解字