Synonyms of the word

earthshaking

• adj. Of global consequence or importance.
• adj. Very loud.

important

• adj. Having relevant and crucial value.

loud

• adj. (of a sound) Of great intensity.
• adj. (of a person, thing, event, etc.) Noisy.
• adj. (of a person, event, etc.) Not subtle or reserved, brash.
• adj. (of clothing, decorations, etc.) Having unpleasantly and tastelessly contrasting colours or patterns;…
• adj. (of marijuana, slang) High-quality; premium; (by extension) having a strong or pungent odour indicating…
• adv. Loudly.
• n. (slang) High-quality marijuana.

significant

• adj. Signifying something; carrying meaning.
• adj. Having a covert or hidden meaning.
• adj. Having a noticeable or major effect; notable.
• adj. Reasonably large in number or amount.
• adj. (statistics) Having a low probability of occurring by chance (for example, having high correlation and…
• n. That which has significance; a sign; a token; a symbol.

world-shaking

• adj. Momentous; of great import; of great significance, importance or consequence.