Without effort; without difficulty or struggle.(adverb)
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Use "effortlessly" in a sentence
"They way he can move his voice up and down so effortlessly is amazing."
"Your advantaged and/or bright child may succeed effortlessly from the ages of three to seven years of age (approximately) when language acquisition is at its peak and little academic stress is put upon them."
"The whole is brought together in the third part of the book, the novel, and as is often the case with me, a book suddenly glides effortlessly from a good read into a great one."