easily
Definitions
Without difficulty or effort.
Without doubt; clearly or by a large margin.
Examples
She easily finished the marathon despite the rainy weather.
The new software is designed to be easily installed by beginners.
He can easily solve complex math problems in his head.
Synonyms
effortlessly simply smoothly readily facilely fluently lightly
Antonyms
difficultly laboriously arduously painfully strenuously hardly strugglingly