LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective with an indeclinable portion

quantusque

quantusque (feminine quantaque, neuter quantumque, adverb quantōque)
Classical[kʷanˈtʊs.kʷɛ]Ecclesiastical[kʷanˈtus.kʷe]

Meaning

  1. adjectiveof whichever amount (it may be)
    quantusque campus calumniīs hōc Aemiliānī trāmite aperiātur158 CE – 159 CE, Apuleius, Apologia sive pro se de magia 55

Declension

singular
formmasculinefeminineneuter
nominativequantusquequantaquequantumque
genitivequantīquequantaequequantīque
dativequantōquequantaequequantōque
accusativequantumquequantamquequantumque
ablativequantōquequantāquequantōque
vocativequantequequantaquequantumque
plural
formmasculinefeminineneuter
nominativequantīquequantaequequantaque
genitivequantōrumquequantārumquequantōrumque
dativequantīsquequantīsquequantīsque
accusativequantōsquequantāsquequantaque
ablativequantīsquequantīsquequantīsque
vocativequantīquequantaequequantaque

Origins

From quantus (“how much, how many”, adjective) + -que (particle).

Quick answers

What does quantusque mean in Latin?
quantusque, a adjective, means “of whichever amount (it may be)”.
How do you pronounce quantusque?
In classical Latin, [kʷanˈtʊs.kʷɛ]; in ecclesiastical (church) Latin, [kʷanˈtus.kʷe].