busiest

adj

1. (form-of, superlative)superlative form of busy: most busy

   “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.”

   “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.”

verb

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