'Lateness' definitions:

Definition of 'lateness'

From: WordNet
noun
Quality of coming late or later in time [ant: earliness]

Definition of 'Lateness'

From: GCIDE
  • Lateness \Late"ness\, n. The state, condition, or quality, of being late; as, the lateness of his arrival; the lateness of the hour; the lateness of the season. [1913 Webster]