Synonyms of heat-on

1 Syllable

crying, dire

2 Syllables

pressing, clamant, burning, claiming, serious, instant, forcing, vital, crucial

3 Syllables

demanding, insistent, critical, distressing, requiring, hurry-up, life-and-death, constraining, acute, compelling, clamorous, exigent, obliging, exacting

4 Syllables

high-priority, immediate

5 Syllables

importunate, imperative