The definition of past is former or is something that has already happened.(adjective)
An example of past is someone's ex-boyfriend.
The past is what has already happened.(noun)
An example of the past is yesterday.
See past in Webster's New World College Dictionary
intransitive verb, transitive verb
See past in American Heritage Dictionary 4
Origin: Middle English
Origin: , from past participle of passen, to pass; see pass.
See past in Ologies
the condition of being first in a place and of having a relatively simple nature. —aboriginal, n., adj.
adherence to or fondness for ancient things or customs. —antediluvian, n., adj.
interest in the culture of antiquity, especially that of classical Greece and Rome. —antiquary, antiquarian, n. —antiquarian, adj.
devotion to archaism. —archaeolater, n. —archaeolatrous, adj.
an inclination toward old-fashioned things, speech, etc. Also archaicism. —archaist, n. —archaic, adj.
a person who records time or the events that have occurred in time.
Obsolete, the recording or study of past events.
strong fondness or admiration for the culture, mores, etc, of the Middle Ages. —medievalist, n. —medievalistic, adj.
the study of antiquities. —paleologist, palaeologist, n. —paleologic, palaeologic, paleological, palaeological, adj.
Medicine. the study of diseases from former times as found in fossils and mummified remains.
an explanation of events of the past through the laws of causation. —paletiologist, palaetiologist, n. —paletiological, palaetiological, adj.
the study of papyrus manuscripts. —papyrologist, n. —papyrological, adj.
Obsolete, one devoted to the archaic. —philarchaic, adj.
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