The phrase "ugly duckling" is a well-known idiom that refers to someone or something that appears unattractive, unfashionable, or unwanted at first glance but later reveals hidden qualities or beauty. Full definition
It seems to have a bit of a rep as the poor, misunderstood, ugly duckling of the industry, despite being well - liked by quite a few consumers. (knowyourmobile.com)
But are they really turning from ugly ducklings into swans? (arsenalarsenal.net)
At the end of the day, I'll take a little bit of ugly duckling in return for a durable and sweat proof pair of headphones that fit well. (businessinsider.com)