1. [mid-19C+] a general intensifier, e.g. fucking idiot.
2. [mid-19C+] pertaining to sexual intercourse.
3. [20C+] implying a variety of negatives, e.g. vile, despicable, unpleasant, corrupt, dirty.
4. [1910s+] as infix -fucking- e.g. absofuckinglutely adv.; fanfuckingtastic adj.; guaranfuckingtee v.
[1920s-30s] (US) sexually enthusiastic.
[1910s; 1990s+] an intensified form of sense 1
see separate entries.
[20C+] a general excl.
[1990s+] an excl. used to denote astonishment, dismay, acceptance, praise, recognition.
see my fucking oath! under my oath! excl.