Unsheathe \Un*sheathe"\, v. t. [1st pref. un- + sheath.]

To deprive of a sheath; to draw from the sheath or scabbard, as a sword. [1913 Webster]

To unsheathe the sword, to make war. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

62 Moby Thesaurus words for "unsheathe": bare, break the seal, bring to light, clear, denudate, denude, deobstruct, develop, disclose, discover, dismask, divest, draw the veil, expose, fleece, free, impart, lay bare, lay open, let daylight in, let out, manifest, open, open up, patefy, pluck, raise the curtain, remove, reveal, shear, show, show up, strip, strip bare, unblock, uncase, unclench, uncloak, unclog, unclutch, uncork, uncover, uncurtain, undo, undrape, unfold, unfoul, unfurl, unkennel, unlatch, unlock, unmask, unpack, unplug, unroll, unscreen, unseal, unshroud, unshut, unstop, unveil, unwrap

Source: Moby Thesaurus II by Grady Ward, 1.0
 

unsheathe v : draw from a sheathe or scabbard; "the knight unsheathed his sword" [ant: sheathe]

Source: WordNet (r) 2.0
 

Unsheathe \Un*sheathe"\, v. t. [1st pref. un- + sheath.]

To deprive of a sheath; to draw from the sheath or scabbard, as a sword.

To unsheathe the sword, to make war.

Source: Webster's Revised Unabridged Dictionary (1913)