Collocations for knife - noun

blunt, dull (esp. AmE)
sharp
serrated
long
small
four-inch, six-inch, etc.
rusty
electric
plastic, silver, steel
kitchen, table
bread, butter, fish, steak
butcher (esp. AmE), butcher's (esp. BrE), chef's
carving, paring (esp. AmE)
pocket, Swiss army™
bowie (esp. AmE), hunting, sheath (esp. BrE)
butterfly, flick (BrE)
Stanley™ (BrE), utility (AmE)
craft (BrE), X-acto™ (AmE)
palette
putty (AmE)

set
a set of kitchen knives

pick up
She picked up her knife and fork and started to eat.

lay down, put down
use
Use a sharp knife to cut away the spare dough.

sharpen
hold

cut, slice
That knife doesn't cut very well—it needs sharpening.

clatter

blade, handle
block, holder
sharpener

with a/the knife
The lines can be cut with a craft knife.

the blade of a knife, the handle of a knife
go under the surgeon's knife (esp. BrE)
He is to go under the surgeon's knife (= have surgery) again on Thursday.

a knife and fork

long, sharp
combat (esp. AmE)

be armed with, carry, have
She carries a knife in her bag now.

brandish, point, wave, wield
She pointed her knife at Richard.
He waved his knife in her face threateningly.

draw, draw out, produce, pull, pull out, take out, whip out
He suddenly pulled a knife on me.
She suddenly produced a knife from her pocket and started brandishing it.

come at sb with, stab sb with, threaten sb with
She stabbed him in the back with a 12-inch knife.

plunge, press, push, put, stick, thrust, twist (often figurative)
He plunged the knife deep into her heart.
He pressed the knife tighter against her throat.
Just to twist the knife (= cause additional suffering, tension, etc.), the filmmakers have provided a surprise ending.

sharpen, whet

cut sth, pierce sth, slash sth, slice sth, slice through sth
She cried out in pain as the knife slashed her arm.
She felt a knife slice her wrist open.

protrude
He was slumped over his desk with a knife protruding from his back.

attack, fight
a frenzied knife attack
He and his gang had a knife fight one night.

cut, wound
blade

with a/the knife

the blade of a knife, the hilt of a knife
hold a knife against sb's throat, hold a knife at sb's throat, hold a knife to sb's throat, put a knife to sb's throat
She put the knife to his throat to frighten him into silence.

a knife in sb's heart (figurative)
Each word he uttered was a knife in her heart.