Auxiliary verb (5-dan, う, transitive)
1. to harm; to hurt; to injure; to damage; to spoil; to mar; to ruin
それでも、豪華な雰囲気は損なわれていない。Even so, the luxurious atmosphere has not been spoiled.
2. to fail to do; to do amiss; to miss one's opportunity to do
after the -masu stem of a verb
こっちとしても、売り損なって残念だよ。For our part, too, it's a shame we missed the chance to sell it.
3. to almost do; to come close to doing
after the -masu stem of a verb