long-lasting
Long-lasting (adjective) means continuing to exist, work or have an effect for a long time. Example: “The treaty brought a long-lasting peace to the region.”
How to use long-lasting
Learner’s notesIn plain EnglishKeeps going or keeps working for a long time.
Neutral, and very common in product marketing for batteries, cosmetics, paint and flavour. Hyphenate before a noun; after a verb the hyphen is optional but usually kept.
Longstanding looks back at how long something has already existed; long-lasting looks forward at how long it will continue.
Fill the gap
Can you complete this real example?
The treaty brought a _____ peace to the region.