If something is inevitable, it will definitely happen, like death or tax season.

Inevitable comes from the Latin word inevitabilis, which means unavoidable. If you say something is inevitable, you give the sense that no matter what scheme you come with to get around it, it's going to happen sooner or later. You can use all the skin products you want, but wrinkles are inevitable.

Definitions of inevitable

adj incapable of being avoided or prevented

“the inevitable result”
fatal, fateful
controlled or decreed by fate; predetermined
ineluctable, inescapable, unavoidable
impossible to avoid or evade:"inescapable conclusion"
unavoidably determined by prior circumstances
avertable, avertible, avoidable, evitable
capable of being avoided or warded off

adj invariably occurring or appearing

“the inevitable changes of the seasons”
capable of being foretold

n an unavoidable event

“don't argue with the inevitable
Type of:
destiny, fate
an event (or a course of events) that will inevitably happen in the future

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