1.
not very; not much
Used with negative predicates to indicate a low degree or infrequency.
あんまり is the casual/colloquial form of あまり.
NEGATIVE USAGE (most common):
Excessive usage
- あんまりだ (That's too much!/That's terrible!)
- あんまり嬉しくて (so happy that...)
Register
- あんまり: casual, colloquial
- あまり: neutral, can be used in writing
- Both have the same meaning
Note: In negative sentences, あんまり softens the negation, similar to English "not really" or "not that much."