probable

1 of 2

adjective

prob·​a·​ble ˈprä-bə-bəl 

ˈprä(b)-bəl

1

: supported by evidence strong enough to establish presumption but not proof

a probable hypothesis

2

: establishing a probability

probable evidence

3

: likely to be or become true or real

probable outcome

probable

2 of 2

noun

: one that is probable

Synonyms of probable

Adjective

• plausible
• credible

Examples of probable in a Sentence

Adjective

It is probable that life exists outside of our planet.

the counselor could find no probable reason for the girl's bizarre actions

Recent Examples on the Web

Adjective

Across many parts of the city, 100% of properties are projected to face possible or probable subsidence risk in 2030, according to data from the British insurance company Aviva. — Laura Paddison, CNN Money, 11 Sep. 2026

Approximately 39% of responders met criteria for probable PTSD and 35% for probable depression, according to their study, published Thursday in the journal Nature Communications. — Ava Tsapatsaris, ABC News, 11 Sep. 2026

Noun

The Dodgers scratched Ohtani from their upcoming probables list one day later. — Katie Woo, New York Times, 11 Sep. 2026

Overall, the Centers for Disease Control and Prevention has gotten reports of more than 11,500 cases (including 4,173 confirmed and over 7,400 probable) from 41 states. — Beth Mole, ArsTechnica, 23 July 2026

Word History

Etymology

Adjective

Middle English, from Latin probabilis commendable, probable, from probare to test, approve, prove — more at prove

First Known Use

Adjective

14th century, in the meaning defined at sense 1

Noun

1638, in the meaning defined above

Phrases Containing probable

• probable cause

Rhymes for probable

• improbable

Kids Definition

probable

adjective

prob·​a·​ble

ˈpräb-ə-bəl

: reasonably sure but not certain of happening or being true : likely