IPA: /ˈkɒnstəntli/
KK: /ˈkɒnstəntli/
In a way that happens all the time or without stopping.
She is constantly checking her phone for messages.
Constantly → It is formed from "constans" (from Latin, meaning standing firm or steadfast) and the suffix "-ly" (meaning in a manner of). The word "constantly" means in a manner that is steadfast or unchanging over time.
Think of something that is 'standing firm' ('constans') and doing so 'in a manner' ('-ly') — that's why constantly means doing something in a steady or unchanging way.