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to be unable to answer a question, especially in a test
to not know the most recent information about something, so that you no longer understand it completely
to no longer have recent knowledge or information about something
to not know anything about a subject or not have the skills to do something
to be unable to imagine what something is like because you have never experienced it
to not know or understand something
to not have enough knowledge to give an opinion about something
to not find out that something has happened, especially something bad
to know nothing about a subject
English version of thesaurus of to not know something or someone
when electronic information is lost because the software or devices needed to read it are no longer available
a dance in which a pair of dancers turns continuously while moving around the dance floor
a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users
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Free thesaurus definition of to not know something or someone from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.