Definition of Go off on one

1. Verb. (British colloquial) To launch into an animated diatribe, or passionate description or explanation of something. ¹

¹ Source:

Lexicographical Neighbors of Go Off On One

go into one's shells
go it alone
go jump in the lake
go kaflooey
go large
go mad
go moggy
go native
go nowhere
go nuts
go off
go off at half-cock
go off at score
go off half-cocked
go off into the weeds
go off on one (current term)
go off the boil
go off the reservation
go on
go out
go out like a light
go out of one's way
go out on a limb
go out the window
go over
go over like a lead balloon
go over someone's head
go overboard
go past
go pear-shaped

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