What does "bear out" mean?

To corroborate, prove, or confirm; to demonstrate; to provide evidence for.

What is a synonym for "bear out"?

Common synonyms include: affirm, afford support, attest, authenticate, back, back up.

/bɛəɹ ˈaʊt/ verb

verb ·Uncommon ·Advanced level

Verb

1
To corroborate, prove, or confirm; to demonstrate; to provide evidence for. transitive
"It was a promising idea, but the evidence did not bear out their theory."
2
support with evidence or authority or make more certain or confirm wordnet
3
To maintain and support to the end; to defend to the last.
"It is company only that can bear a man out in an ill thing"
4
To move quickly and sharply in an outward direction during a race; to veer out. intransitive
"That horse always bears out on the turns."

"It was a promising idea, but the evidence did not bear out their theory."

From Middle English beren out, dissimilated from earlier Middle English outberen, equivalent to bear + out.