いい加減(かげん)irresponsible, perfunctory, careless, lukewarm, half-baked, halfhearted, vague, reasonable, moderate (usu. in suggestions or orders), considerably, quite, rather, pretty

父(ちち)はいい加減(かげん)な人(ひと)だが、母(はは)は丁寧(ていねい)な人(ひと)だ。

My father is a casual person, but my mother is a polite person. {irresponsible, perfunctory, careless, lukewarm, half-baked, halfhearted, vague, reasonable, moderate (usu. in suggestions or orders), considerably, quite, rather, pretty}

時間(じかん)が無(な)いから、仕事(しごと)をいい加減(かげん)に終(お)わらせよう。

Since we don't have time, let's just wrap up the work haphazardly. {irresponsible, perfunctory, careless, lukewarm, half-baked, halfhearted, vague, reasonable, moderate (usu. in suggestions or orders), considerably, quite, rather, pretty}

いい加減(かげん)にやった宿題(しゅくだい)を提出(ていしゅつ)したら、先生(せんせい)に怒(おこ)られました。

When I submitted my carelessly done homework, the teacher got angry with me. {irresponsible, perfunctory, careless, lukewarm, half-baked, halfhearted, vague, reasonable, moderate (usu. in suggestions or orders), considerably, quite, rather, pretty}

社長(しゃちょう)：「いい加減(かげん)に働(はたら)いている社員(しゃいん)を首(くび)にせねばならない。」

President: 'I have to fire employees who are not working properly.' {irresponsible, perfunctory, careless, lukewarm, half-baked, halfhearted, vague, reasonable, moderate (usu. in suggestions or orders), considerably, quite, rather, pretty}

僕(ぼく)の叔父(おじ)はいわゆるいい加減(かげん)な人(ひと)だが、僕(ぼく)はそのラフな感(かん)じが大好(だいす)きだ。

My uncle is what you would call a casual person, but I really love that laid-back vibe. {irresponsible, perfunctory, careless, lukewarm, half-baked, halfhearted, vague, reasonable, moderate (usu. in suggestions or orders), considerably, quite, rather, pretty}