| Definition | among science fiction and fantasy fans: to write or perform filk songs. |
| OED requirements | antedating 1991 |
| Earliest cite | L. Niven et al. 'Falllen Angels' |
| Comment | Added to the OED in March 2002. Earliest cite in the OED: 1991. |
| Last modified | 6 July, 2008 |
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| 1978 S. E. Miller I Could Have Filked All Night 33/3 | I could have filked all night |
| 1991 Fantasy Spring 50/3, | I also go to cons occasionally, where I can be found filking late into the night. |
| 1991 L. Niven et al. Fallen Angels 74 | They'd be filking about it for generations. |