Synonyms: all-time
Definition: unsurpassed in some respect up to the present
Usage: prices at an all-time high; morale at an all-time low; among the all-time great lefthanders
Similar words: uncomparable, incomparable
Definition: such that comparison is impossible; unsuitable for comparison or lacking features that can be compared
Usage: an incomparable week of rest and pleasure; the computer proceeds with its incomparable logic and efficiency; this report is incomparable with the earlier ones because of different breakdowns of the data