IPA: /ˈkriːsləs/
KK: /ˈkriːsləs/
Not having any folds or wrinkles; smooth and flat.
The creaseless fabric made the shirt look brand new.
Creaseless is formed from "crease" (from Old French *creisse*, meaning a fold or wrinkle) and "-less" (meaning without). The word describes something that is without creases or wrinkles, indicating smoothness or flatness.
Think of something that is 'without' ('-less') 'folds' or 'wrinkles' ('crease') — that's why creaseless means smooth and wrinkle-free.