Unsuitable
Inappropriate
noun, な adjective
Something that is not suitable is unsuitable and inappropriate.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
この職が私にとって適不適かを考えているんですが、まだ答えは出ていません。
I’ve been thinking about whether this job suits me or not, but I haven’t found the answer yet.