ascertain

Meaning

1. (transitive) To find out definitely; to discover or establish.
2. (obsolete, transitive) To make (someone) certain or confident about something; to inform.
3. (Yorkshire, dated, intransitive) To look for something lost.
4. (archaic, transitive) To establish, to prove.
5. (archaic, transitive) To ensure or effect.

Synonyms

determine

find out

verify

establish

learn

check

see

👀

confirm

ensure

insure

find

🔍

make sure

certify

note

notice

decide

control

take note

inquire

state

discover

assure

know

make sure of

settle

resolve

understand

affirm

make inquiries

detect

watch

⌚

see to it

clear up

make sure of something

observe

explore

prove

validate

enquire

investigate

inspect

build

corroborate

boost

assess

consolidate

bolster up

conclude

hear

grasp

Translations

constater

feststellen

constatare

accertare

konstatieren

averiguar

vérifier

constateren

appurare

descobrir

vaststellen

determinar

ermitteln

sich vergewissern

διαπιστώνω

Pronounced as (IPA)

/ˌæsəˈteɪn/

Etymology

Inherited from Middle English: acerteynen

Cognate with Spanish: acertar

In summary

From Middle English acerteynen, from Old French acertener, from a- (“to, towards”) + certener (“make sure of”), from the adjective certain, from Latin certus (“certain, fixed”). Compare to Spanish acertar.