Part of speech:
Having a wide range, extent, influence, or effect
The definition of important is having great significance or consequence.
Vital to the resolution of a crisis or the determination of an outcome:
The definition of decisive is having the ability to make decisions or something that determines what comes next.
(--- Theol.) So evil as to cause spiritual death; mortal
Having importance in or influence on history.
Having meaning, function, or purpose:
Highest in rank, power, or authority:
The definition of pivotal is something which is central, vital or very important.
Fairly large in amount or quantity:
The definition of unparalleled is something that has no equal.
Small in size or amount.
The definition of trivial is insignificant, or of no importance.
Not important; insignificant or petty.
Having little value or importance; trivial
The definition of earnest is intense and not playful, or important.
Very popular or important:
Causing great discomfort, damage, or distress:
Of great consequence; serious or momentous:
Of decisive importance; fateful:
So critically decisive as to affect the future
Find another word for momentous. In this page you can discover 27 synonyms, antonyms, idiomatic expressions, and related words for momentous, like: far-reaching, serious, consequential, important, crucial, decisive, epochal, eventful, fateful, grave and historic.