Important
Principal
Synonyms Main, principal, major, prime, foremost, predominant, overriding, crucial, indispensable, essential, urgent, fundamental, number-one, valuable, useful, beneficial, of the essence, of interest, pertinent, germane, chief, key, salient, dominant, supreme, paramount, cardinal, vital, critical, significant, central, basic, of value, valued, of use, necessary, of concern, relevant, and material.
Powerful
Synonyms Powerful, of influence, high-ranking, top-level, dominant, prominent, pre-eminent, noteworthy, distinguished, respected, celebrated, great, leading, outstanding, big time, big league, influential, well connected, high-level, controlling, formidable, eminent, notable, of note, esteemed, prestigious, famous, grand, foremost, big, and major league.
Significant
Synonyms Significant, momentous, of import, of great consequence, major, crucial, pivotal, urgent, historic, serious, substantial, signal, consequential, of great moment, of great import, far-reaching, critical, vital, decisive, epoch-making, seminal, grave, weighty, and material.
Example Sentences
This meeting is very important.
Health is the most important factor.
She gave an important speech.
It’s important to stay focused.
Education is important for success.