Syniedig, a. perceived; considered
Synigliad, n. a stimulation
Synio, v. to feel; to be sensible
Syniol, a. sensible, perceptive
Syniolaeth, n. perceptivity
Synioldeb, n. perceptibility
Synu, v. to observe steadfastly: to be amazed
Synwr, n. a sense, meaning
Synwyreb, n. a sentence
Synwyrgar, a. sententious