| Word | Definitions | Synonyms |
|---|---|---|
| improbably | (adverb) not easy to believe | Synonyms: implausibly, incredibly, unbelievably |
| indescribably | (adverb) to an inexpressible degree | Synonyms: ineffably, inexpressibly, unspeakably, unutterably |
| probabilistically | (adverb) by the use of probability theory | - |
| probably | (adverb) with considerable certainty; without much doubt | Synonyms: belike, in all likelihood, in all probability, likely |
| (adverb) easy to believe on the basis of available evidence | Synonyms: believably, credibly, plausibly |