• kucky,
• fck,
• funck,
• folck,
• fuek,
• fouc,
• fukk,
• faci,
• knuck,
• facks,
• funcky,
• lucku,
• luuck,
• fuct,
• queck,
• fuelk,
• cquck,
• freck,
• juck,
• focu

• fuse,
• fug,
• fuzz,
• fusco,
• fucci,
• fuss,
• fuze,
• fugu,
• Fugo,
• fuoco,
• fuji,
• fukui.

The adverb form of the word "fuck" is "fucking".

In general, the derived adjective form of the word "fuck" is "fucking". However, please note that it is considered a profanity and offensive language.

The plural of the "fuck" can be the "fucks".

The singular of the "fuck" can be the "fuck".