crown it all

present singular third person crowns it all · participle present crowning it all · participle past crowned it all · past crowned it all

1. UKTo be the final, or last-mentioned, event or occurrence in a series of particularly favourable / fortunate or unfavourable / unfortunate events.

   A lovely crisp exhaust: a feeling of almost unlimited power combined with complete freedom of running: and, to crown it all, a most melodious and wholly American chime whistle—these were my immediate impressions as we stormed rapidly out of Göttingen, intent on winning back some of the lost time.

   1960 October, P. Ransome-Wallis, “Modern motive power of the German Federal Railway: Part Two”, in Trains Illustrated, page 611

   Synonyms: cap it all, top it off