Knife thrust is the term used to describe a quick and forceful stabbing movement with a knife. However, there are several synonyms that can be used in place of this term. Some of the most common synonyms for knife thrust are stab, jab, lunge, pierce, plunge, and penetrate. Each synonym represents a slightly different way of describing the same basic action. For example, stab and jab both imply a quick, sharp movement, while lunge and plunge suggest a more forceful and aggressive action. No matter which synonym you choose, the important thing is to clearly convey the action being taken with the knife.