clearly or sharply defined to the mind
"clear-cut evidence of tampering"
"Claudius was the first to invade Britain with distinct...intentions of conquest"
"trenchant distinctions between right and wrong"
- clear cut
characterized by or full of force and vigor
"a hard-hitting expose"
"a trenchant argument"
- hard hitting
having keenness and forcefulness and penetration in thought, expression, or intellect