IPA: /ˈʌltɪmətli/
KK: /ˈʌltəmɪtli/
In the end; after everything has been considered or done.
Ultimately, we decided to go with the first option.
Ultimately is formed from "ultim" (from Latin "ultimus", meaning last or final) and "-ly" (a suffix used to form adverbs). The word ultimately refers to something that is the final result or conclusion.
Think of 'last' ('ultim') to remember that 'ultimately' refers to the final outcome or conclusion.