無駄遣い

(1)spend thoughtlessly; throw away; "He wasted his inheritance on his insincere friends"; "You squandered the opportunity to get and advanced degree"

(2)軽率に費やす

(3)浪費する

(4)spend extravagantly; "waste not, want not"

(5)贅沢に費やす

(6)use inefficiently or inappropriately; "waste heat"; "waste a joke on an unappreciative audience"

(7)非効率的に、または不適当に使用する

(1)waste heat

(2)熱を無駄遣いする

(3)waste a joke on an unappreciative audience

(4)感謝知らずの聴衆に対して無駄に冗談を言う