IPA: /ˈɛksɪkrəblɪ/
KK: /ɛksˈɛkrəblɪ/
In a manner that is extremely bad or unpleasant.
The movie was execrably boring, and I couldn't wait for it to end.
Execrably → It is formed from "execrabilis" (from Latin, meaning accursed or detestable) and the adverbial suffix "-ly" (meaning in a manner of). The word "execrably" means in a manner that is detestable or deserving of cursing.
Think of something that is 'accursed' or 'detestable' — that's what 'execrably' means when you add '-ly' to describe how something is done.
No commonly confused words.