The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

--adj. 8 secondary, incidental, subordinate, tangential,
subsidiary, indirect, ancillary, marginal, lesser, minor,
unimportant, inconsequential, inconsiderable, insignificant:
The main point is that he refuses to cooperate, and his reasons
are entirely a side issue. 9 auxiliary, secondary: We live in a
quiet side-road just off the High Street.
--v. 10 side with. take sides with, show preference for, be
partial to, show favouritism to or for, support, favour, prefer,
go in or along with, join ((up) with), ally with, be or become
allied with, Colloq US throw in with, team up with: You can be
sure that Kenneth will always side with the favourite candidate.
sidelong adj. oblique, indirect, sideways, covert, surreptitious: He
marched straight ahead, without so much as a sidelong glance in
her direction.
sidestep v. avoid, dodge, circumvent, skirt, evade, shun, steer clear
of, Colloq duck: The minister neatly sidestepped all questions
about her retirement.
sidetrack v. divert, deflect, draw off or away, distract, turn aside;
shunt: Where was I? I got sidetracked by your comment about
being overweight.
sidewalk n. walk, Chiefly Brit pavement, footpath, footway: You may
play on the sidewalk, but don't you dare step into the street.
sideways adv. obliquely, laterally, edgeways, edge on, sidelong,
crabwise, indirectly, US and Canadian edgewise: The dresser
will go through the door if you turn it sideways.
sidle v. edge: She sidled towards the door, opened it, and was gone.
siege n. 1 blockade, encirclement, beleaguerment, besiegement: The
siege of Troy lasted ten years.
--v. 2 lay siege to, besiege, blockade, beleaguer, cordon off,
encircle, box or pen or shut in, bottle up: They sieged the
city and the inhabitants surrendered when they ran out of food
and water.