The term ‘Suppression’ means non-declaration of facts or information which a taxable person is required to declare in the return, statement, report or any other document furnished under the Act or the rules made thereunder, or failure to furnish any information on being asked for, in writing by the proper officer.
(ICAI FAQ PUBLICATIONS 06-09-2017 Determination of tax not paid or short paid or erroneously refunded or input tax credit wrongly availed or utilized by reason of fraud or any willful misstatement or suppression of facts: FAQ NO. 18)