Synonyms for besides:
supplementary, aside from, secondly, That, Because, supernumerary, extraordinary, added.
fresh, as, plus, Since, spare.
precisely, witness, explain.
additional, ornamental, extra, adjoining, secondary, in addition to, along with, attached, auxiliary, supplemental, affixed, Adorning, companion.
in any case.
additionally, not to mention, moreover, also, too, together with, as well as, furthermore, in addition, And, further, Including, likewise.
as well, in addition to.
also, in addition, not to mention, too, moreover, along with, Including, And, as well as, likewise, together with, additionally, furthermore, withal, further.
Sense 1 (noun)
secondly, supplementary, exclusive of, else, apart from, aside from, plus.
Sense 2 (noun)
look at, nay, Since, as, Because, precisely, explain.
as well, also, in any case, too, likewise.
in addition to (preposition)