juggle - To keep several objects in motion in the air at the same time; or to try to deal with two or more important jobs or activities at the same time
jumbo - Extra or oversized in comparison to the standard.
justified - Having a valid reason or explanation for an action, belief, or decision.
kibosh - When an idea or plan is spoiled or stopped, often due to unforseen circumstances.
labyrinth - A complex network of passages or paths, very difficult to figure out and find one's way.
kowtow - To act in an excessively submissive or obedient manner, often to gain favor; to bow or kneel as a sign of deep respect or submission.
irresponsible - Not thinking enough or not worrying about the possible results of what you do
kidding - Joking around in a light-hearted way.
irritate - To make someone angry, or annoyed; or to make apart of your body sore or painful.
knucklehead - A foolish or unintelligent person; someone who makes silly mistakes.
keen - Having a sharp or highly developed sense; or eager or enthusiastic about something.
kindhearted - Acting with warmth, sympathy, and a desire to help.
