だらしが無い

Meaning

1. expadj-i
   slovenly (appearance, work, etc.); sloppy; untidy; undisciplined; careless; loose; slack
2. expadj-i
   weak; feeble; weak-willed; cowardly; gutless

Example sentences

• パジャマ着たまま登校したって、だらしが無い。

  Coming to school in your pajamas, how lazy!