Correct spelling


Correct spelling, explanation: this adverb is created by adding the suffix -ly to the adjective beautiful. By adding it the consonant l is doubled. Therefore beautifully is the correct spelling, and it is incorrect to spell beautifuly with one l.

Definition of beautifully:
adverb, in an attractive, nice, or pretty manner
She danced beautifully and won the first prize.
You are correct, that’s beautifully said!

Incorrect spelling


Incorrect spelling, explanation: the right spelling beautifully comes from adding the adverbial suffix -ly to the adjective beautiful. Beautifuly is incorrect because by adding the suffix l should be doubled. Beautiful + -ly = beautifully.