Hydrwst, a. apt to be noisy
Hydwf, a. luxuriant, thriving
Hydwyll, a. easily deceived
Hydwyth, a. elastic, nimble
Hydyn, a. tractable
Hŷdd, n. stag, deer
Hyddadl, a. disputable
Hyddail, a. apt to bear leaves
Hyddawn, a. liberal
Hyddes, n. a bind, red deer