The definition of tenacious is someone or something that holds on firmly.(adjective)
See tenacious in Webster's New World College Dictionary
Origin: L tenax (gen. tenacis) < tenere, to hold: see tenant
See tenacious in American Heritage Dictionary 4
Origin: From Latin tenāx, tenāc-, holding fast
Origin: , from tenēre, to hold; see ten- in Indo-European roots.
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