IPA: /ɪkˈskluːsɪvli/
KK: /ɪkˈsklusɪvli/
Only or just this, without including anything or anyone else.
The club is exclusively for members, so guests are not allowed.
Exclusively → It is formed from "ex-" (meaning out of or from) and "claudere" (meaning to shut or close) combined with the suffix "-ly" (meaning in a manner). The word "exclusively" means in a manner that shuts out or restricts to a particular group or category.
Think of 'shutting out' ('claudere') something 'from' ('ex-') to remember that 'exclusively' means limited to a specific group.