Masticate simply means to chew. It is a more formal or elevated alternative to the everyday verb chew, which is why it can sound strange, overly serious, or unintentionally funny in casual conversation. Merriam-Webster uses it as a classic example of a high-register synonym for an ordinary action.

✅ You should masticate your food slowly.
Here, masticate means chew. Merriam-Webster treats the two as direct equivalents.

✅ You should chew your food slowly.
In normal conversation, chew usually sounds much more natural than masticate. Merriam-Webster’s wordplay entries present masticate as a fancier alternative to the ordinary verb chew.

✅ Good mastication helps break food down.
Merriam-Webster notes that mastication refers to general chewing.

✅ The dentist told him to masticate carefully after the procedure.
This works, but it sounds formal and slightly clinical compared with chew carefully.

The most common mistake is assuming masticate means something more complicated, more inappropriate, or more exotic than it really does.

It doesn’t.

It just means chew.

Another common mistake is using it in very casual conversation where it sounds unnecessarily formal. In most everyday situations, native speakers would simply say chew. Merriam-Webster’s own examples treat masticate as one of those learned or high-register words people sometimes use for humorous or stylistic effect.

Use this memory rule:

masticate = chew
mastication = chewing

If you want the natural everyday word, choose chew.
If you want a more formal, technical, or slightly playful word, masticate works.

A simple practical rule: