Another word for important.

Important says something matters, but not how much or why. Pick the word that shows what rides on it.

Worth noticing

significantImportant enough to notice, or to measure.There was a significant drop in sales last spring.
notableStands out enough to mention.The town’s most notable building is the old mill.
majorImportant, and large in scale.The bridge needs major repairs before winter.

essentialNeeded, not just nice to have.Water is essential for the hike, so pack extra.
vitalEssential, with an edge of urgency.Sleep is vital for a growing child.
keyThe part the rest depends on.Timing is the key factor in this recipe.

pivotalImportant as the point where things turn.That phone call was the pivotal moment of her career.
criticalImportant, with danger if it goes wrong.The next few hours are critical for the patient.
decisiveImportant because it settles the outcome.Her vote was decisive in the final count.

Keep important for notices and instructions; a grander word there sounds like shouting.

Coming to the App StoreAll fifty words

In Gloss, every word comes with its near neighbours and a line on how they differ, so you can pick the exact one. For iPhone, free for three days.