Synonyms of infallible

infallible

adjective

1

as in unerring

not being or likely to be wrong

a teacher with an infallible memory for names

Synonyms & Similar Words

• unerring
• perfect
• reliable
• flawless
• unfailing
• foolproof
• faultless
• impeccable
• dependable
• inerrant
• sure
• errorless
• certain

Antonyms & Near Antonyms

• defective
• imperfect
• faulty
• fallible
• flawed
• unreliable
• undependable

2

as in reliable

not likely to fail

an infallible cure for hiccups

Synonyms & Similar Words

• reliable
• unfailing
• sure
• fail-safe
• surefire
• certain
• dependable
• deadly
• can't-miss
• unerring

Antonyms & Near Antonyms

• fallible
• uncertain
• doubtful
• questionable