From Old Norse gera (and variants).
gjøre (imperative and present tense gjør, passive gjøres, simple past gjorde, past participle gjort)
- to do (something)
Until July 1st 2005, the split infinitive gjøra was also allowed. The form is still used by some people, especially in the dialects of Eastern Norway and Trøndelag.
gjøre (present tense gjør, past tense gjorde, past participle gjort, passive infinitive gjørast, present participle gjørande, imperative gjør)
- form removed with the spelling reform of 2012; superseded by gjere