This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Like a stereotypical jack the lad: boorish, reckless, inclined to binge drinking, etc.

"The news today that female Labour MPs are complaining about the "laddish" culture in Number 10 Downing Street should be seen as preparing the way for the Labour Party to kick Gordon Brown out after the Norwich North by-election."