Synonyms for Concerned (same or very similar meaning)
WordNet sense 1 (being connected either logically or causally or by shared characteristics ):
related, related to
WordNet sense 2 (culpably involved):
implicated
WordNet sense 3 (involved in or affected by or having a claim to or share in):
interested
WordNet sense 4 (full of anxiety and concern):
solicitous
From the ODE community, based on WordNet
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