1. (of speech) gushing, rapid, abundant; (of a person) speaking in this way
1. He talks in a very effusive way, rapidly and excitedly.
2. demonstratively emotional
2. Because he is not an effusive man, many people think that he must be coldhearted, but in fact he is not.
e ex (out, away)#fundere (to pour, melt) (Latin)
Effusive when spoken have similarity with Diffusive, which means something going out/ gushing out. E=Out, fuse = melt like a fuse i.e. Giving outside path to emotions, overflowing emotions