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

Class V. Words Releasing to the Voluntary Powers
Division (I) Individual Volition
Section II. Prospective Volition
1. Conceptional Volition

628. Mid-course.

   NOUN:MID-COURSE, midway [rare], middle way, middle course; moderation; mean [See Mean]; middle [See Middle]; juste milieu [F.], mezzo termine [L.], golden mean, ariston metron [Gr. αριστoν μετρoν], aurea mediocritas [L.]; fifty-fifty [colloq.].
  SHORTCUT, crosscut; straight (direct) [See Direction] -course, – path; great-circle sailing.
  COMPROMISE, half measures, half-and-half measures; neutrality.
   VERB:KEEP THE GOLDEN MEAN; keep in -, steer -, preserve- -a middle, – an even- course; avoid both Scylla and Charybdis; go straight (direct) [See Direction].
  COMPROMISE, make a compromise, go fifty-fifty [colloq.], concede half, go half-way.
   ADJECTIVE:NEUTRAL, average, even, evenly balanced; impartial, moderate; straight (direct) [See Direction].
   ADVERB:MIDWAY, in the mean; in moderation.
  1. Medium tenuere beati.
  2. Est modus in rebus.—Horace
  3. Moderation is the virtue best adapted to the dawn of prosperity.—Pitt