What does "indubitably" mean?

In a manner that leaves no possibility of doubt.

How do you pronounce "indubitably"?

Pronounced //ɪnˈdjuː.bɪ.tə.bli//.

Common synonyms include: absolutely, actually, admittedly, assuredly, beyond a doubt, beyond a shadow of a doubt.

/ɪnˈdjuː.bɪ.tə.bli/ adv

adv ·Uncommon ·College level

Adverb

1
In a manner that leaves no possibility of doubt.
"Near-synonyms: verifiably, provably"

Adverb

"If your statement is indubitably true, why do I doubt it?"

From indubitable + -ly.