Synonyms for «unknown quantity»

unspecified known unidentified unnamed undisclosed uncertain undetermined unseen invisible mysterious unexpected anonymous nameless untold odd empty missing random unique huge strange little various unused immeasurable unknowable unimaginable vague unusual small indeterminate infinite hidden incalculable available uniform neutral large exact elusive great total interesting unprecedented indefinite uncounted numerous wild limited

amount quality number value units product measure size time variable thing sum question nature figure variety uncertainty entity estimate objects terms length matter price mystery person money information measurement period sources variation lot point mass dimension power counts items knowledge details volume date substance order supply way future changes