Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class I. Words Expressing Abstract Relations
Section VI. Time
2. Time with reference to a particular Period

125. Morning. [Noon.]

   NOUN:MORNING, morn, matins [eccl.], morningtide [rare or poetic], forenoon, a.m., prime, dawn, daybreak; dayspring, foreday [chiefly Scot.], sun-up [U. S.], peep of day, break of day; aurora; first blush of the morning, first flush of the morning, prime of the morning; twilight, crepuscle or crepuscule, sunrise; daylight, daypeep, cockcrow, cockcrowing; the small hours, the wee sma’ hours [Scot.].
  NOON, midday, noonday, noontide, meridian, prime; nooning, noontime.
  SPRING, springtide, springtime, seedtime; vernal equinox.
  SUMMER, summertide, summertime, midsummer.
   ADJECTIVE:MATIN, matutinal, matinal, matutinary [rare]; crepuscular.
  NOON, noonday, midday, meridional [rare in this sense].
  SPRING, vernal, vernant [obs.].
  SUMMER, æstival or estival.
   ADVERB:AT SUNRISE &c. n.; with the lark, when the morning dawns.
  1. At shut of evening flowers.—Paradise Lost
  2. Entre chien et loup.
  3. Flames in the forehead of the morning sky.—Milton
  4. The breezy call of incense-breathing morn.—Gray