adj.
Underlying is used with these nouns: ↑ assumption , ↑ cause , ↑ concept , ↑ fundamentals , ↑ ideology , ↑ logic , ↑ meaning , ↑ mechanism , ↑ message , ↑ motivation , ↑ motive , ↑ philosophy , ↑ principle , ↑ problem , ↑ reality , ↑ reason , ↑ reasoning , ↑ sense , ↑ seriousness , ↑ structure , ↑ tendency , ↑ tension , ↑ theme , ↑ trend , ↑ truth , ↑ unity , ↑ weakness