IPA: //fɔːrˈmjuːlɪkli//
KK: /ˈfɔrmjʊlɛɪkli/
In a way that follows a fixed pattern or formula, often lacking originality.
The movie was criticized for its formulaically predictable plot.
Formulaically → It is formed from "formula" (from Latin *formula*, meaning a small form or a rule) and "-ically" (meaning in a manner relating to). The word "formulaically" means in a manner that follows a specific formula or set of rules.
Think of a 'formula' as a set of rules or a small form, and remember that 'formulaically' means doing something in a way that follows those rules.
No commonly confused words.