adv ·Moderate ·College level

Definitions

Adverb

1. 1
   In all likelihood.

   "She probably has arrived by now."

Adverb

1. 1
   with considerable certainty; without much doubt wordnet
2. 2
   easy to believe on the basis of available evidence wordnet

Synonyms

All synonyms

in all probabilitylikelypossiblyafter a timeafter a whileafterward

Antonyms

All antonyms

likelyimprobably

Example

More examples

"That was probably what influenced their decision."

Etymology

From Middle English probably, probabily, equivalent to probable + -ly.

Related phrases

in all likelihood

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.