IPA: /ˈruː.mɪ.nə.tɪv/
KK: /ˈrumɪnətɪv/
Tending to think deeply or reflect on things; often associated with being contemplative or pensive.
After reading the book, she felt ruminative and spent hours pondering its themes.
Ruminative → It is formed from "ruminare" (meaning to chew over or ponder) and the suffix "-ive" (meaning having the nature of). The word "ruminative" describes a tendency to think deeply or ponder over something.
Think of the act of 'chewing over' ideas ('ruminare') — that's why ruminative means to think deeply.