We have put together a list of words that are similar to OVERARCH.

3 Alternative Words Similar to overarch

1 Dominate Verb      Synonym Words Like Dominate
2 Prevail Verb      Synonym Words Like Prevail
3 Rule Verb      Synonym Words Like Rule

6 definitions of overarch

1 To form an arch over something.
2 To cover with or as with an arch.
3 To form into an arch above.
4 To hang over like an arch.
5 be central or dominant
6 form an arch over
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Wordnik, Wiktionary, Century, American Heritage, Gcide