mightier , mightiest
Mighty is used to describe something that is very large or powerful.
There was a flash and a mighty bang.
一道闪光伴随着一声轰然巨响。
Mighty is used in front of adjectives and adverbs to emphasize the quality that they are describing.
It's something you'll be mighty proud of.
这是件令你非常骄傲的事。