Antonyms of adj unforgettable

1 sense of unforgettable

Sense 1
unforgettable (vs. forgettable) -- (impossible to forget)

forgettable (vs. unforgettable) -- (easily forgotten)
        => unmemorable -- (not worth remembering)

Similarity of adj unforgettable

1 sense of unforgettable

Sense 1
unforgettable (vs. forgettable) -- (impossible to forget)
       => haunting, persistent -- (continually recurring to the mind; "haunting memories"; "the cathedral organ and the distant voices have a haunting beauty"- Claudia Cassidy)
       => memorable -- (worth remembering)
       => red-letter -- (memorable for being a special occasion; "on red-letter nights a large gathering greeted the celebrity")