1. Godan verb with 'u' ending, Transitive verb

   1.

   to harm; to hurt; to injure; to damage

2. Suffix, Godan verb with 'u' ending

   2.

   to fail to do; to do amiss; to miss one's opportunity to do

3. 3.

   to almost do; to come close to doing

Example sentences

• 失敗は、私の自信を損なうものではない。

  My failure did not weaken my self-confidence.

• 注意しなくては駄目だよ、さもないとまたやり損なうよ。

  You've got to be careful or else you'll miss it again.