Durably

2 clues
So as to last
In a lasting manner
Similar answers:
Ably
Admirably
Adorably
Affably
Agreeably
Albrechtdurer
Amenably
Amiably
Amicably
Amydurer
Arieldurant
Backupprocedure
Baldur
Bordure
Britishhonduras
Builtfordurability
Bulldurham
Capably
Cordura
Corduroy