He performed the task rather usefully! ( He did it well because he was skilled) The word useful is an adjective. Usefully is an adverb. The adjective can be converted to a noun by adding ness to it - usefulness which is used more commonly than the adverb.
literary
ther is no such word as "usefully" that would be terrible grammar, try "useful" that way you could write a sentence for example:: " it is useful to use a dictionary when writing a letter".
Usefully - meaning the act of being useful.Usefully, he had left driving directions and his cell phone number, just in case they were to get lost.This text book is usefully short; it makes it so easy to digest.
From Wikipedia:"An aquiferis a wet underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, or silt) from which groundwater can be usefully extracted using a water well."
I am not writing a sentence using that word.
a sentence using the word endotracheal
This is a sentence using the word aviator.
Usefully : to good effect, beneficiallyExamples:"The long prybar can be employed usefully in many demolition activities.""His vacation was spent usefully, organizing the journals in his attic.""I came to the realization that there were certain public issues that were most usefully dealt with within some sort of framework of at least my private beliefs, if not my private life. (Anna Quindlen)"
this is a sentence using the word armchair.
I am saying a sentence using the word collagen.
your saving planets energ and using it usefully
Please type a sentence using the word assertion.