You might be thinking of words that end with "ly", which is a common suffix in English. This suffix often turns adjectives into adverbs, describing how something is done. For example:
* Beautiful (adjective) -> Beautifully (adverb)
* Slow (adjective) -> Slowly (adverb)
* Happy (adjective) -> Happily (adverb)
"Lovely" itself already functions as an adjective, so it doesn't need to add "ly" to change its meaning.