IPA: /ˈfriːkwəntɪst/
KK: /ˈfrikwəntɪst/
The highest degree of occurring often or repeatedly.
She is the frequentest visitor to the library, coming almost every day.
Comparative: more frequent
Superlative: frequentest
Frequentest → It is formed from "frequent" (from Latin "frequentem", meaning crowded or repeated) and the superlative suffix "-est" (meaning most). The word "frequentest" means the most often occurring or happening.
Think of something that happens 'often' ('frequent') and when it happens the 'most' ('-est'). This helps you remember that 'frequentest' refers to the highest frequency of occurrence.