ごつい

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: 

お前のにいちゃん、ごついなあ。何かスポーツやってんか？
Your older brother is buff. What kind of sports does he do?

Commentary: 

When you want more emphasis, use ごっつい instead.