ascertain – English verb conjugation

English verb forms of ascertain

Nominal Forms

Infinitive: to ascertain
Participle: ascertained
Gerund: ascertaining

Cognates

-

Indicative

Present

Iascertain
youascertain
he;she;itascertains
weascertain
youascertain
theyascertain

Perfect

Ihave ascertained
youhave ascertained
he;she;ithas ascertained
wehave ascertained
youhave ascertained
theyhave ascertained

Past

Iascertained
youascertained
he;she;itascertained
weascertained
youascertained
theyascertained

Pluperfect

Ihad ascertained
youhad ascertained
he;she;ithad ascertained
wehad ascertained
youhad ascertained
theyhad ascertained

Future

Iwill ascertain
youwill ascertain
he;she;itwill ascertain
wewill ascertain
youwill ascertain
theywill ascertain

Future Perfect

Iwill have ascertained
youwill have ascertained
he;she;itwill have ascertained
wewill have ascertained
youwill have ascertained
theywill have ascertained

Subjunctive

Present

Iascertain
youascertain
he;she;itascertain
weascertain
youascertain
theyascertain

Perfect

Ihave ascertained
youhave ascertained
he;she;ithave ascertained
wehave ascertained
youhave ascertained
theyhave ascertained

Imperfect

Iascertained
youascertained
he;she;itascertained
weascertained
youascertained
theyascertained

Pluperfect

Ihad ascertained
youhad ascertained
he;she;ithad ascertained
wehad ascertained
youhad ascertained
theyhad ascertained

Conditional

Present

Iwould ascertain
youwould ascertain
he;she;itwould ascertain
wewould ascertain
youwould ascertain
theywould ascertain

Perfect

Iwould have ascertained
youwould have ascertained
he;she;itwould have ascertained
wewould have ascertained
youwould have ascertained
theywould have ascertained

Imperative

youascertain
weLet's ascertain
youascertain

Progressive (Continuous) Forms

Indicative

Present

Iam ascertaining
youare ascertaining
he;she;itis ascertaining
weare ascertaining
youare ascertaining
theyare ascertaining

Perfect

Ihave been ascertaining
youhave been ascertaining
he;she;ithas been ascertaining
wehave been ascertaining
youhave been ascertaining
theyhave been ascertaining

Past

Iwas ascertaining
youwere ascertaining
he;she;itwas ascertaining
wewere ascertaining
youwere ascertaining
theywere ascertaining

Pluperfect

Ihad been ascertaining
youhad been ascertaining
he;she;ithad been ascertaining
wehad been ascertaining
youhad been ascertaining
theyhad been ascertaining

Future

Iwill be ascertaining
youwill be ascertaining
he;she;itwill be ascertaining
wewill be ascertaining
youwill be ascertaining
theywill be ascertaining

Future Perfect

Iwill have been ascertaining
youwill have been ascertaining
he;she;itwill have been ascertaining
wewill have been ascertaining
youwill have been ascertaining
theywill have been ascertaining

Conditional

Present

Iwould be ascertaining
youwould be ascertaining
he;she;itwould be ascertaining
wewould be ascertaining
youwould be ascertaining
theywould be ascertaining

Perfect

Iwould have been ascertaining
youwould have been ascertaining
he;she;itwould have been ascertaining
wewould have been ascertaining
youwould have been ascertaining
theywould have been ascertaining

Other

Verbs conjugated like 'ascertain'

abandon, abduct, abear, aberr, abject, abord, abort, abound, abraid, abray, abrook, abscind, abscond, absist, absorb, abstain, abstract, accend, accent, accept, etc. (List truncated at 20 verbs)

Synonyms & Antonyms

Synonyms

determine
establish, discover, identify, certify, pinpoint, uncover

Antonyms

determine
hesitate, vacillate, waver, falter

Additional Information

Phrasal Verbs

Etymology

1. 1417, "to inform, to give assurance," from O.Fr. acertener "to assure," from a "to" + certain "certain" (see certain). Modern meaning of "to find out for sure by experiment or investigation" is first attested 1794.
2. 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. See: Old French 'acertener', Spanish 'acertar'.

Verbs referencing "ascertain"

Portuguese acertar, Spanish acertar.

Sample Sentences

  • ‘“ It has been ascertained beyond the possibility of doubt, that she cannot see a ray of light, cannot hear the least sound, and never exercises her sense of smell, if she have any. Thus her mind dwells in darkness and [...] (American Notes for General Circulation)
  • [...] in which we speak both for ourselves and for the shadows who appear to us in those visions of the night, so she, having no words, uses her finger alphabet in her sleep. And it has been ascertained that when her slumber is broken, and is much disturbed by dreams, she expresses her thoughts in an irregular and confused manner on her fingers: just as we should murmur and mutter them [...] (American Notes for General Circulation)
  • [...] attendants, take an active part. Dances and marches are performed alternately, to the enlivening strains of a piano; and now and then some gentleman or lady (whose proficiency has been previously ascertained ) obliges the company with a song: nor does it ever degenerate, at a tender crisis, into a screech or howl; wherein, I must confess, I should have thought the danger lay. At an early hour they all [...] (American Notes for General Circulation)
  • [...] the house to help to do the dress-making, acquired daily accessions of importance from the developments with regard to Miss Ophelia's wardrobe which she had been enabled to make. It was credibly ascertained that Squire Sinclare, as his name was commonly contracted in the neighborhood, had counted out fifty dollars, and given them to Miss Ophelia, and told her to buy any clothes she thought best; and [...] (Uncle Tom’s Cabin)
  • [...] went so far as to state that Miss Ophelia had one pocket-handkerchief with lace all around it,—it was even added that it was worked in the corners; but this latter point was never satisfactorily ascertained, and remains, in fact, unsettled to this day. (Uncle Tom’s Cabin)