constantly
constant + -ly
https://gyazo.com/efae034f85289513091c1b618d023a5e
adverb
continuously over a period of time; always:
絶えず, いつも; しょっちゅう (!しばしば進行形と共に; 時にいらだちを表す)
e.g. the world is constantly changing
e.g. he was constantly on her mind.