Synonyms for Aside (same or very similar meaning)
WordNet sense 1 (a message that departs from the main subject):
digression, parenthesis, divagation, excursus
WordNet sense 2 (in a different direction):
away
WordNet sense 3 (placed or kept separate and distinct as for a purpose):
apart
WordNet sense 4 (in reserve; not for immediate use):
by
From the ODE community, based on WordNet
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