8 across (9) source of room illumination ???????e?
11 across (8) heartless,callous ??????n?
12 across (4,3,5,) resentfully ?i?h ?a? ?????
16 across (7) rigidly formal ???????
18 across (8,4) bar, informally w?t????? ????
22 across (6) rebuttal ??????
24 across (5) commonly encounted ?????