• gad a fling,
• bad a fling,
• nad a fling,
• jad a fling,
• uad a fling,
• yad a fling,
• hzd a fling,
• hsd a fling,
• hwd a fling,
• hqd a fling,
• has a fling,
• hax a fling,
• hac a fling,
• haf a fling,
• har a fling,
• had z fling,
• had s fling,
• had w fling,
• had q fling,
• had a dling

The adverb form for "had a fling" can be "flippantly" or "casually".

The adjective form of "had a fling" is "flingful". However, it is worth noting that "flingful" is not a common or widely recognized word, so it may be more appropriate to describe someone as "someone who had a fling" or "someone who was involved in a fling".