Irresponsible
Pointless, Unfounded, Careless
な adjective
いいかげん
いい加減 (いいかげん) Irresponsible, Pointless, Unfounded, Careless
いい加減にしろ (いいかげんにしろ) Cut It Out, Cut The BS, That's Enough
無駄 (むだ) Futility, Uselessness, Pointlessness
虚しい (むなしい) Empty, Vacant, Futile, Vain
空疎 (くうそ) Vain, Groundless, Futile
None