effusive

Getting a compliment from your effusive Aunt Sally can be a little embarrassing. Since she's so effusive, Aunt Sally holds nothing back, gushing with enthusiasm.

The adjective effusive means "extravagantly demonstrative," and if you know someone who expresses positive emotions in a heartfelt, bubbly way, you understand just what the word means. The word effusive has a surprisingly similar definition in geology; it describes a particular kind of volcanic eruption, one in which lava bubbles up out of the volcano and flows around it.

Definitions of effusive
1

adj uttered with unrestrained enthusiasm

Synonyms:
burbling, burbly, gushing
lively
full of life and energy

adj extravagantly demonstrative

“insincere and effusive demonstrations of sentimental friendship”
Synonyms:
gushing, gushy
demonstrative
given to or marked by the open expression of emotion

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