疎(おろそ)か

勉強(べんきょう)を疎(おろそ)かにしたから志望校(しぼうこう)に落(お)ちた。

I failed to get into my desired school because I neglected my studies. {neglect, negligence, carelessness, not to mention ..., needless to say ..., not to speak of ..., not only ...}

先生(せんせい)：「学生(がくせい)は学業(がくぎょう)を疎(おろそ)かにしてはいけません。」

Teacher: "Students must not neglect their studies." {neglect, negligence, carelessness, not to mention ..., needless to say ..., not to speak of ..., not only ...}

遊(あそ)びに夢中(むちゅう)になって仕事(しごと)を疎(おろそ)かにしたら首(くび)になりました。

I got fired because I became so engrossed in play that I neglected my work. {neglect, negligence, carelessness, not to mention ..., needless to say ..., not to speak of ..., not only ...}

仕事(しごと)を疎(おろそ)かにしようものなら、仕事(しごと)を失(うしな)うことになるでしょう。

If you neglect your work, needless to say, you will lose your job. {neglect, negligence, carelessness, not to mention ..., needless to say ..., not to speak of ..., not only ...}

準備(じゅんび)が疎(おろそ)かだったとあれば、計画(けいかく)が失敗(しっぱい)に終(お)わるのも不思議(ふしぎ)ではない。

If the preparations were neglected, it is not surprising that the plan ended in failure. {neglect, negligence, carelessness, not to mention ..., needless to say ..., not to speak of ..., not only ...}