Subquintuple is a word used to describe something that is less than five times a certain amount. The spelling of this word can be understood through the use of IPA transcription, which would represent it as /ˌsʌbkwɪnˈtjʊpəl/. This spelling indicates the presence of the prefix "sub-", which means "less than," followed by "quintuple," which refers to something that has been multiplied by five. The word "subquintuple" therefore describes something that is less than five times a given amount.
The word "subquintuple" is derived from the Latin prefix "sub-" meaning "under, beneath" and the word "quintuple" which is derived from the Latin word "quintus" meaning "fifth". So, "subquintuple" refers to a number that is less than or beneath five times a given amount.