Synonyms of top-priority

1 Syllable

chief, crying

2 Syllables

heavy, driving, pressing, urgent, clamant, burning, touchy, serious, wanted, instant, salient, vital, weighty, leading, crucial

3 Syllables

important, demanded, principal, demanding, insistent, critical, required, hurry-up, capital, impelling, paramount, essential, momentous, compelling, clamorous, exigent, called-for, primary, foremost

4 Syllables

immediate, necessary, persuasive

5 Syllables

importunate, imperative, indispensable