At all events

something that happens or is regarded as happening; an occurrence, especially one of some importance.
the outcome, issue, or result of anything:
the venture had no successful event.
something that occurs in a certain place during a particular interval of time.
physics. in relativity, an occurrence that is sharply localized at a single point in sp-ce and instant of time.
compare .
sports. any of the contests in a program made up of one sport or of a number of sports:
the broad jump event followed the pole vault.
in any event, regardless of what happens; in any case.
also, at all events.
in the event of, if there should be:
in the event of rain, the party will be held indoors.
in the event that, if it should happen that; in case:
in the event that i can’t come back by seven, you can eat without me.
noun
anything that takes place or happens, esp something important; happening; incident
the actual or final outcome; result (esp in the phrases in the event, after the event)
any one contest in a programme of sporting or other contests: the high jump is his event
(philosophy)

an occurrence regarded as a bare instant of sp-ce-time as contrasted with an object which fills sp-ce and has endurance
an occurrence regarded in isolation from, or contrasted with, human agency compare act (sense 8)

in any event, at all events, regardless of circ-mstances; in any case
in the event of, in case of; if (such a thing) happens: in the event of rain the race will be cancelled
in the event that, if it should happen that
verb
to take part or ride (a horse) in eventing
n.

1570s, from middle french event, from latin eventus “occurrence, accident, event, fortune, fate, lot, issue,” from past participle stem of evenire “to come out, happen, result,” from ex- “out” (see ex-) + venire “to come” (see venue). event horizon in astrophysics is from 1969.
see:

blessed event
in any case (event)
in case (in the event)
in the unlikely event