вы́явить

uncommon #6315

verbperfective imperfective is выявля́ть

1.
to detect, to identify, to uncover, to find
Удало́сь вы́явить со́тни неплате́льщиков нало́гов.
Hundreds of tax evaders were detected.
Often of hidden things found by checking: diseases, offenders, defects.
2.
to reveal, to bring to light, to establish, to clarify
Коми́ссия вы́явила причи́ны ава́рии.
The commission established the causes of the accident.
Typically of causes, problems or relationships made clear by investigation.

Usage info

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Вшивость у школьников выявили после осмотра.
Head-lice infestations among the schoolchildren were detected after the examination.
Расследование выявило связь фирмы с оффшором.
The investigation revealed the company’s connection to an offshore firm.
Бракераж помог выявить дефектные детали.
The inspection helped identify the defective parts.
Наш экспериме́нт вы́явил нето́чность в его отчёте.
Our experiment has revealed that his report was inaccurate.
Я не могу́ вы́явить пробле́му.
I can't pinpoint the problem.
Перкуссия помогает выявить изменения в лёгких.
Percussion helps detect changes in the lungs.
Комиссия выявила нецелевой расход бюджетных средств.
The commission uncovered the improper use of budget funds.
У Мэри вы́явили рак моло́чной железы в октябре́.
Mary was diagnosed with breast cancer in October.

Imperative
ты	вы́явь
вы	вы́явьте

Active present	-
Active past	вы́явивший	having revealed, having identified, having detected, having exposed
Passive present	-
Passive past	вы́явленный	revealed, detected, identified, disclosed
Gerund present	-
Gerund past	вы́явив выявивши	while doing (past)