Committed.
Without humor or expression of happiness; grave in manner or disposition
Really intending what is said (or planned, etc); in earnest; not jocular or deceiving
Important; weighty; not insignificant
In a serious manner; seriously.
obliquely
Towards the side; sideways.
Slanting or sloping; oblique.
Indirect; suggestive; not straightforward.
Directed to the side; sideways.
Along the side of something.