What does the name Sinead mean? The meaning of the name Sinead is God Is Gracious. The origin of the name Sinead is Irish. This is the culture in which the name originated, or in the case of a word, the language.
People who like the name Sinead also like: Maeve
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Name Notes: Form of JANET. Pronounced Shi-NAYD. Sinead O'Connor, singer.