Noswaith, n. a certain night
Noswyl, n. evening tide
Noswyliad, n. leaving work at eve; a keeping of vigils
Noswylio, v. to leave work at eve; to keep vigils
Nudd, n. a fog, a mist
Nuddo, v. to become foggy
Nug, n. a quiver, a ripple
Nwy, n. what pervades; spirit gas
Nwyd, n. bias; whim, trick
Nwydedd, n. a habit of freaks