Definition

Not showing signs of getting tired; always energetic and working hard without needing rest.

Example

She is tireless in her efforts to help others.

Comparatives & Superlatives

Conversation

Have you noticed how tireless Jason is during practice?

Absolutely! He never seems to slow down, no matter what.

I wish I had that kind of energy; it’s inspiring to watch.

Right? His tireless attitude really motivates the rest of us.

Synonyms & Antonyms

Root Explanation

Tireless → It is formed from "tire" (from Old French *tirer*, meaning to pull or draw) and "-less" (meaning without). The word "tireless" means without fatigue or the ability to continue without getting tired.

Memory Tip

Think of someone who can keep going without getting tired — 'tire' means to draw or pull, and '-less' means without. This helps you remember that 'tireless' describes someone who is never fatigued.

Visually Confused Words