Tenacious

1. adjective

   stubbornly unyielding; ; ; ; - T.S.Eliot

   “dogged persistence”

   Similar: dogged, dour, persistent, pertinacious, unyielding

2. adjective

   good at remembering

   “a retentive mind”

   Similar: retentive, recollective, long

3. adjective

   sticking together

   “two coherent sheets”

   Similar: coherent