adjective (subtler; subtlest) see: technical
Date: 14th century
1. delicate , elusive , difficult to understand or perceive ; obscure ,
2. perceptive , refined , having or marked by keen insight and ability to penetrate deeply and thoroughly ,
3. highly skillful ; expert , cunningly made or contrived ; ingenious , artful , crafty , operating insidiously , subtleness noun subtly adverb