Synonyms for Dedication (same or very similar meaning)
WordNet sense 1 (a message that makes a pledge):
commitment
WordNet sense 2 (a short message (as in a book or musical work or on a photograph) dedicating it to someone or something):
inscription
WordNet sense 3 (the act of binding yourself (intellectually or emotionally) to a course of action):
allegiance, loyalty
From the ODE community, based on WordNet
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