Synonyms of stratospheric

1 Syllable
stiff, high
2 Syllables
undue, dizzying, sky-high
3 Syllables
extreme, plethoric, towering, overmuch
4 Syllables
excessive, uncalled-for, exorbitant, overpriced
5 Syllables
unreasonable, unconscionable, unmeasurable, overabundant, immoderate, recrementitious, inordinate, extortionate