A knock-down-drag-out fight

A serious fight or argument.My friend and his brother had a knock-down-drag-out fight last evening.

Knock down the price of (something) knock the price of (something) down

To lower the price of something.I bargained hard so that I could knock down the price of the DVD player.

Knock about

To travel without a plan, to go where one pleases.We decided to go to Brazil and knock about for a couple of months.

Knit one’s brow

To wrinkle one's brow by frowning.The teacher knit his brow and looked sternly at the child.

Knee-high to a grasshopper

Very young (usually used for a child).I learned to ride a bicycle when I was knee-high to a grasshopper.

Kiss of death

An act that puts an end to someone or something.It was the kiss of death for the conversation with the teacher when the student learned that the... Read more →

Kiss and tell

To participate in something private and then tell others about it.I do not trust the girl because she is the kind of person who will kiss and... Read more →

Kiss and make up

To become friends again after a fight or argument.After they had a fight, the couple was quick to kiss and make up.

Kink in one’s neck

A cramp in one's neck that causes pain.I woke up this morning with a kink in my neck.

Kind of

Moderately, somewhat, more or less.I was kind of tired when I arrived home last night.