undisciplined russian

• распусти́ться

  to open, blossom out, become loose, unloosen, slacken, become undisciplined, let oneself go, dissolve, melt

• распуска́ться

  open, blossom out, become loose, unloosen, slacken, become undisciplined, let oneself go, dissolve, melt

• разгильдя́й

  slob, an undisciplined chap

• недисциплини́рованный

  undisciplined

• распу́щенный

  undisciplined, dissolute, fast, loose

• расхля́банный

  loose, unstable, lax, undisciplined

Examples

• Том лени́вый и недисциплини́рованный.Tom is lazy and undisciplined.