IPA: /juːˈnɪtərɪli/
KK: /juːˈnɪtərɪli/
In a manner that is unified or singular, without division or separation.
The team worked unitarily to achieve their common goal.
Unitarily → It is formed from "unit" (from Latin "unitas", meaning oneness or unity) and "-arily" (meaning in a manner relating to). The word "unitarily" means in a manner that relates to or is characterized by unity or oneness.
Think of 'unit' which means oneness, and remember that 'unitarily' describes doing something in a way that emphasizes that oneness.