Webster’s Revised Unabridged Dictionary · 1913 Obfirm Ob·firm′, 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. ‹ Obeyingly Obfirmation ›