Well adapted for cutting or piercing; having a keen edge or point: opposed to blunt. Having a keen cutting edge. Also said of the edge.

Biting, cutting with a sharp edge.

Of weapons, cutting instruments, and the like: Having a very sharp edge or point; able to cut or pierce with ease. Also of an edge or point…

That carves or cuts; cutting, sharp.

Intensely painful or destructive; keen, piercing; deadly. Of a thing, esp. a natural agent, weapon, disease, suffering, poison, etc.

Cutting, adapted for cutting; having a keen edge, sharp; †sharp-pointed (obsolete). archaic and poetic.

Sharp, keen.

That cuts, in various senses of the verb.

Sharp, keen (as an edge, point, or weapon).

(un-, prefix1 affix 1.)

With the sense ‘resembling steel’ (in colour, hardness, etc.), as steel gloss; steel-bright, steel-hard, steel-sharp, steel-straight, steel-strong…

Of a blade: sharp, keen. rare.

Of a sword, lance, etc.: not blunted or dulled; sharp. Formerly also figurative and in extended use. Now chiefly historical.

Not bated or blunted.

That bites (in the various senses of the vb.).

Of a cutting instrument: sharp. Obsolete. rare.

(un-, prefix1 affix 2.)

Sharp, piercing, keen. Of a weapon or the like; also of pain. archaic. (After Shakespeare: see quot. 1597 at sense 2.)

Capable of cutting, sharp.