"a retentive mind"
"tenacious memory"
"dogged persistence"
"dour determination"
"the most vocal and pertinacious of all the critics"
"a mind not gifted to discover truth but tenacious to hold it"
"men tenacious of opinion"
"two coherent sheets"
"tenacious burrs"
Female feet, Too weak to struggle with tenacious clay.
出自: W. Cowper