1. a person who fights in a war or battle; a soldier
2. a person who competes in boxing or other combat sports
3. a military aircraft designed for attacking other aircraft

Examples

• The fighter pilot completed his mission successfully.
• She’s a real fighter who never gives up on her dreams.
• The boxer was known as a fierce fighter in the ring.
• Freedom fighters organized resistance against the occupation.
• The new fighter jet can reach incredible speeds.
• He’s been a fighter against cancer for three years.
• The fighter defended his title for the fifth time.