IPA: /ˈsʌfɪksəl/
KK: /sʌfɪksəl/
Relating to or functioning as a suffix, which is a word part added to the end of a base word to change its meaning or grammatical function.
In linguistics, suffixal forms can change the tense of a verb or the number of a noun.
Suffixal → It is formed from "suffix" (from Latin "suffigere", meaning to fasten underneath) and "-al" (meaning pertaining to). The word "suffixal" refers to something that pertains to or is related to a suffix.
Think of a suffix as something that is 'fastened underneath' a word, and '-al' means it relates to that. So, suffixal means related to suffixes.