IPA: /əˈbɪz.mə.li/
KK: /əˈbɪz.mə.li/
In a way that is extremely bad or poor; to a very great degree.
The team's performance was abysmally poor, leading to their defeat.
Abysmally is formed from "abysm" (from Old French *abisme*, meaning a bottomless pit or deep void) and the suffix "-ally" (meaning in a manner relating to). The word describes something done in a manner that is as deep or profound as an abyss, often used to indicate something very bad or poor.
Think of the word 'abyss' to remember that 'abysmally' means in a manner that is as deep or bad as an abyss.