Definify.com

Webster 1913 Edition

Noun.

[L.

decertatio

, fr.

decertare

decertatum

;

de-

certare

to contend.]

Contest for mastery; contention; strife.

[R.]

Arnway.

Noun.

[L. To strive.] Strife; contest for mastery.

DECES'SION, n. [L. to pass.] Departure.

DECH'ARM, v.t. To remove a spell or enchantment; to disenchant.

DECH'ARMED, pp. Disenchanted.

DECH'ARMING, ppr. Removing a spell.

DECHRIS'TIANIZE, v.t. To turn from christianity; to banish christian belief and principles from.

DECI'DABLE, a. That may be decided.

decertation ‎(plural decertations)

(obsolete) contest for mastery; contention; strife
- John Arnway
  Now or never is the day of decertation.