副词

1. without interruption

e.g. the world is constantly changing

Synonym: constantlyalwaysforeverperpetually

2. with unflagging resolve

e.g. dance inspires him ceaselessly to strive higher and higher toward the shining pinnacle of perfection that is the goal of every artiste

Synonym: endlesslyceaselesslyunceasinglyunendinglycontinuously