だらし無い
1
adjective (keiyoushi)
slovenly (appearance, work, etc.);sloppy;untidy;undisciplined;careless;loose;slack
それ以来彼はだらしない生活をしてきた。
He has led a loose life since then.
2
adjective (keiyoushi)
weak;feeble;weak-willed;cowardly;gutless