Hydranc, a. apt to perish
Hydras, a. of notable kindred
Hydraul, a. easily consumed
Hydraw, a. easily instructed
Hydred, n. longitude
Hydredawl, a. longitudinal
Hydref, n. autumn; October
Hydrefn, a. well-ordered
Hydreiddrwydd, n. penetrability
Hydreigledd, a. aptness to roll