でもしか先せん生せい

noun

teacher who took the job for lack of better options; unmotivated teacher

Derogatory slang for a teacher who entered the profession not out of passion but because they couldn't find anything else to do. Often implies low motivation or competence.

• あの先せん生せいは、どう見みてもでもしか先せん生せいだよね。

  That teacher is clearly just someone who became a teacher for lack of anything better, don't you think?

• でもしか先せん生せいに教おそわると、生せい徒とがかわいそうだ。

  It's a shame for students to be taught by an unmotivated teacher.