Definition

A substance found in tea that is similar to caffeine and can stimulate the nervous system.

Example

Many people enjoy thein for its mild stimulating effects, especially in the morning.

Conversation

I just learned that tea contains thein, which is similar to caffeine.

Really? I had no idea it had something like that in it.

Yeah, it can actually give you a nice boost of energy.

That makes sense! I always feel more alert after a cup.

Synonyms & Antonyms

Root Explanation

This word originates from Old English, meaning a type of thin or slender person or thing.

Memory Tip

Think of someone who is 'thin' — that's why 'thein' refers to something slender.

Visually Confused Words