To Hurt Someone, To Scratch, To Damage
transitive verb, ichidan verb
You つける (attach) a wound to someone or something. In other words, this means to hurt someone, or to scratch or to damage something.
きずつける
The reading is 傷. If you remember the reading for that you got this too.
コンタクトレンズを傷つけちゃったかも。
I might have scratched my contact lens.
私たちも知らないうちに人を傷つけているかもしれません。
We may also be hurting people without knowing it.
誰だよ？俺のベンツに鉄棒で傷つけやがったのは？！見つけたらただじゃおかねえぞ！
Who the heck damaged my Mercedes with an iron bar?! They'll pay for this!