Meaning of よほど in Japanese

Definition of よほど

よっぽど(yoppodo) · よほど(yohodo) 【余っ程 ·余程】

(adv, n, adj-no, adj-na) very; greatly; much; to a large extent; quite
あいつがガッツポーズするなんて、よっぽど嬉しかったんだろうな。
It must have been something really big for him to strike a triumphant pose like that.
(adv) just about to

I could tell by the look on his face that he had come on very important business.