busiest

busy +‎ -est

busiest

1. superlative form of busy: most busy
   • 1951 October, H. A. Vallance, “Across Denmark by Lyntog”, in Railway Magazine, page 658:

     Even at the busiest periods, an air of quiet orderliness pervades the hall, and the first impression gained by the traveller is one of efficiency, neatness and cleanliness.

   • 2020 July 29, Paul Stephen, “A new collaboration centred on New Street”, in Rail, page 57, photo caption:

     With more than 47 million passenger entries and exits recorded in 2018-2019, New Street is the UK's busiest station outside London and the fifth busiest overall.

busiest

1. (archaic) second-person singular simple present indicative of busy

• besuits, subsite