ごっつ(い)

amazing; big; large; strong; great

Word type: 

Standard: 

でかい／つよい／すごい

Standard kanji: 

でかい／強い／凄い

Example: 

それごっつ(い)おもろい話やなあ。
That's an amazingly funny story.

Commentary: 

The final い is sometimes dropped.
Also see ごつい.