adj. shal·low·er,
shal·low·est 1. Measuring little from bottom to top or surface; lacking physical depth.
2. Lacking depth of intellect, emotion, or knowledge: "This is a shallow parody of America" (Lloyd Rose).
3. Marked by insufficient inhalation of air; weak: shallow respirations.
4. In the part of a playing area that is closer to home plate: shallow left field.