Source : Webster's Revised Unabridged Dictionary (1913)

Obfirm \Ob*firm"\, Obfirmate \Ob*firm"ate\, v. t. [L.
   obfirmatus, p. p. of obfirmare to make steadfast. See {Ob-},
   and {Firm}, v. t.]
   To make firm; to harden in resolution. [Obs.] --Bp. Hall.
   Sheldon.