あまり～ない

About

あまり is an adverb meaning "not very" ("remainder" is a separate meaning), and must be paired with a negative verb.

E.g. あまりおいしくない。
"Not very tasty."

あまり has the casual, spoken variation 「あんまり」.

Summary

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  あまり～ない means "not very..."

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  あまり is sometimes said as 「あんまり」 in casual, spoken Japanese