I. ˈ ̷ ̷ˌ ̷ ̷ adverb
Etymology: side (I) + long
1. : in the direction of or along the side : laterally , obliquely , sideways
darting eyes looking sidelong out of a wizened face — Irish Digest
glanced at them sidelong — Hearst's
2. : with the side toward someone or something
seated … sidelong to the window — Nathaniel Hawthorne
3. : on the side : with one side to the ground or floor
sidelong the plow beside the field-gate lay — William Morris
II. adjective
1. : having a slanting direction or a sloping position : lying on or inclining to one side
moved downwards in a sidelong way — Bram Stoker
sidelong country
2.
a. : directed to one side or sideways
the bashful virgin's sidelong looks of love — Oliver Goldsmith
sidelong glances
b. : moving or extending sideways
shot out sidelong boughs — Alfred Tennyson
c. : indirect rather than straightforward or open
a sidelong hope that there will be … reward in it — Frances Keene