Artificial intelligent assistant

testor

I. ˈtestor Obs. rare.
    [f. test v.1 + -or 2 d.]
    One who testifies; a witness.

1570 Levins Manip. 170/37 A Testor, testator, -oris. 1621 Burton Anat. Mel. iii. iv. ii. iii, Conscience..a continual testor to give in evidence, to empanel a jury to examine us, to..cry guilty.

II. testor, -orne, -ourn
    obs. forms of tester3.

Oxford English Dictionary

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