Interference
Noun, する verb, and の adjective
ぼうがい
これ以上妨害するのを止めないと、えい業妨害でうったえるぞ！
If you don't stop interfering, I'm going to sue you for obstruction.
ここまで来れば、てきの妨害の危険はほぼ無いだろう。
Since we've come pretty far, the risk of being intercepted by the enemy should be almost zero.
私はいつか映画のように公務執行妨害で逮捕されてみたい。
Someday I want to be arrested for interfering with police officers, like in the movies.
Something that obstructs and also does damage is an obstruction. No obstruction is ever good and if left too long it really will cause damage and interference as well.
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.