DE FACTO
De` fac"to. Etym: [L.]

Defn: Actually; in fact; in reality; as, a king de facto, — distinguished from a king de jure, or by right.

DEFAIL De*fail", v. t. Etym: [F. défaillir to fail; pref. dé- (L. de) + faillir. See Fail, and cf. Default.]

Defn: To cause fail. [Obs.]

DEFAILANCE
De*fail"ance, n. Etym: [F. défaillance.]

Defn: Failure; miscarriage. [Obs.]
Possibility of defailance in degree or continuance. Comber.

DEFAILURE
De*fail"ure, n.

Defn: Failure. [Obs.] Barrow.

DEFALCATE
De*fal"cate, v. t. [imp. & p. p. Defalcated; p. pr. & vb. n.
Defalcating.] Etym: [LL. defalcatus, p. p. of defalcare to deduct,
orig., to cut off with a sickle; L. de- + falx, a sickle. See
Falchion.]

Defn: To cut off; to take away or deduct a part of; — used chiefly of money, accounts, rents, income, etc. To show what may be practicably and safely defalcated from the [the estimates]. Burke.