IPA: /ɪkˈsiːdɪŋli/
KK: /ɪkˈsiːdɪŋli/
To a very great or extreme extent; more than usual.
She was exceedingly happy with her exam results.
Exceedingly → It is formed from "ex-" (meaning out of or beyond) and "cedere" (meaning to go or yield), along with the suffix "-ingly" (indicating manner). The word "exceedingly" means in a manner that goes beyond or surpasses a certain limit.
Think of going 'beyond' ('ex-') and 'yielding' ('cedere') to remember that 'exceedingly' means to do something to a great extent.