Tireless: meaning, definitions and examples

Best for describing someone who shows persistent effort and doesn't get easily tired. It has a positive connotation.

• She is a tireless advocate for environmental protection.
• His tireless work ethic earned him a promotion.

Used for someone who is careful and serious about their work or duties. It emphasizes careful and persistent work.

• She is very diligent in her studies.
• The diligent worker completed the project ahead of schedule.

Describes someone who is extremely energetic and never seems to get tired. This word is often used to highlight an extraordinary level of stamina.

• His indefatigable efforts in the campaign were astonishing.
• The teacher had an indefatigable passion for education.

Used to show someone who maintains their effort, enthusiasm, or energy consistently without showing signs of fatigue. It often has a somewhat formal tone.

• She showed unflagging commitment to the cause.
• His unflagging enthusiasm kept the team motivated.

Best suited when emphasizing someone's continued effort or enthusiasm over time, regardless of challenges or fatigue.

• She was a tireless advocate for social justice, always ready to support the cause

More formal than 'tireless', often used in literature or formal speech to describe a person who persistently continues their work despite any difficulties or the need for rest.

• The scientist's indefatigable dedication to his research led to groundbreaking discoveries

This word indicates someone or something that is strong, energetic, and full of life. Often used to describe physical activities but can also apply to mental efforts.

• She led a vigorous campaign, traveling from town to town to gather support

Similar to 'tireless', but often implies that the person’s efforts are continuous and steady without showing any sign of stopping.

• His untiring commitment to helping the homeless earned him great respect in the community