I've seen treble and double used as determiners. Is it valid to use quadruple, quintuple, sextuple, and the equivalent words for greater numbers in the same way?

For example:

The outlay on housing was quintuple that on education.

  • You can, but the higher you go, the less likely you are to be understood. It is better to use four-fold, five-fold, etc.
    – Mick
    Nov 27 '16 at 10:34
  • Why do you feel that you might not be able to use them as determiners?
    – ColleenV
    Nov 27 '16 at 11:19
  • Because I din't find 'sextuple' in Oxford Advanced Learner's Dictionary'- 8th edition. Nov 27 '16 at 11:55

For your example, usually "five times" would be used in place of "quintuple" though the meanings are the same

The outlay on housing was five times that on education.

It could be because most people may not be familiar with Latin and "x times" is easier to understand once one is past "double", "twice", or "triple".

1 single
2 double
3 triple/treble
4 quadruple
5 quintuple pentadruple
6 sextuple hexatruple
7 septuple
8 octuple
9 nonuple
10 decuple
11 undecuple hendecuple
12 duodecuple
13 tredecuple
100 centuple

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