See also:

Radestrian

Alternative forms

  • -as (after sibilants or sibilants followed by another consonant)
  • -'s dvuslig (dated)

Etymology

Contraction of -as, itself an ellipsis of as dvuslig (“of the clock”).

Pronunciation

Particle

-'s

  1. o'clock
    er ara's
    at one o'clock

Usage notes

  • Can only and must be used with numbers 1–12. For the 24-hour clock, numbers 13 and onwards simply do not use -'s.