Synonyms of undefeated

undefeated

adjective

as in unbeaten

not having or including any losses or defeats

They were undefeated in their first nine games.

an undefeated team

Related Words

• unbeaten
• unconquered
• invincible
• unbeatable
• unstoppable
• unconquerable
• indomitable
• insurmountable
• unbowed
• invulnerable
• impregnable
• bulletproof
• unassailable
• unsubdued
• insuperable
• inviolable
• untouchable
• defended
• protected
• armored
• guarded
• unbreachable
• shielded
• safeguarded
• secure
• safe

Dissimilar Words

• open
• unprotected
• susceptible
• liable
• unsafe
• insecure
• unguarded
• exposed
• weak
• helpless
• powerless
• defenseless
• imperiled
• vulnerable
• vincible
• surmountable
• superable

Example Sentences

Recent Examples of undefeated

The image that aptly symbolizes the Chiefs’ undefeated opening four weeks is now the image that represents the uncertainty baked into the next 13. — Sam McDowell 7, Kansas City Star, 7 Oct. 2026

East Paulding and Ringgold, each undefeated, picked up enough votes to hoist themselves into the Top 10 of the AJC Varsity Composite football rankings. — Todd Holcomb, AJC.com, 6 Oct. 2026

Kathryn Riley / Getty Week 4 of the NFL season featured dramatic comebacks, quarterbacks who redeemed themselves (while others continued to struggle) and three teams left with undefeated records. — Kayla Hayempour, NBC news, 5 Oct. 2026

Heading into Week 4, the 49ers remain undefeated and sit atop the NFC West, even ahead of reigning Super Bowl champions the Seattle Seahawks. — Jason Cohen, PC Magazine, 4 Oct. 2026