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sit in on
verb as in attend
verb as in contribute
verb as in partake
verb as in participate
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On this page you'll find 147 synonyms, antonyms, and words related to sit in on, such as: show up, visit, appear, catch, frequent, and haunt.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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