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on one occasion only
happening only once, or existing only in one place
something that is unrepeatable can only be done once or not very often because it is very special
a once in a lifetime experience is very unusual or special
with one sudden action, or on one single occasion
used for emphasizing that this is the only time that something will happen
… a language for human communication which has been invented and has not developed naturally
a share of the profits of a company, paid once or twice a year to the people who own the...
spectacles; boiled sweets, candy; soft aniseed-flavoured jelly sweets coated with blue and pink sugar sprinkles
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Free thesaurus definition of happening only once from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.