Top definition
adj. tremendous; crumpetly splendid; rippingly good in a wholesome British way. Usually said satirically.
I say. I possess box seats for the cricket match tonight. It would be ever so bosh if you could accompany me. The purveyed comestibles hold promise of fortnumish delight.

Sounds like kateriffic katering! I'll have my amenuensis wire your manservant if I'm free.
by gnostic1 April 30, 2011
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