. a threshold, a sill

Seiler, n. a basement, a cellar

Seilfaen, n. foundation stone

Seiliant, n. a foundation

Seilio, v. to lay a foundation

Seiliog, a. having a foundation

Seilwaith, n. ground-work

Seilydd, n. a founder

Seimio, v. to grease over

Seimiol, a. of a greasy quality

Seimlyd, a. of a greasy quality

Seinfawr, a. sonorous, loud

Seinglawr, n. sounding board

Seiniad, n. a sounding; accent

Seiniant, n. a making a sound

Seinio, v. to sound, to resound

Seiniol, a. sounding; toned

Seintio, v. to canonise

Seintiol, a. hallowed; saintly

Seintiolaeth, n. sanctitude

Seirch, n. equipage; harness

Seirchio, v. to harness

Seirian, a. sparkling, glittering

Seirianad, n. a sparkling

Seirianu, v. to sparkle

Seithdant, n. a heptachord

Seithfed, a. seventh

Seithongl, n. a septangle

Seithug, a futile, fruitless

Seithugiant, n. frustration

Sel, n. espying; distant view sea

Selder, n. keen-sightedness

Seldremio, v. to range

Seliad, n. an espying; perception

Seliant, n. a perception

Selsig, n. a pudding; a sausage

Selu, v. to espy, to gaze

Salw, n. a gaze, a beholding

Sellt, n. a limit, a border

Selltu, v. to explore, to seek

Sen, n. a stigma, a taunt

Senedd, n. a senate; synod

Seneddol, a. senetorial

Seneddu, v. to form a senate

Seniad, n. a taunting; chiding

Senol, a. taunting, scoffing

Sensigl, n. a daisy

Senu, v. to taunt; to chide

Senw, n. a stigma; a reproach

Senyllt, n. a seneschal

Ser, n. bill, or bill-hook

Ser, n. stars

Serch, n. regard, or love: prep. with respect to, notwithstanding

Serchiad, n. a loving

Serchog, a. loving, amorous

Serchogi, v. to render fond

Sercholdeb, n. amorousness

Serchu, v. to be affected; to love

Seren, n. a star; a spangle

Sereniad, n. a sparkling

Serenig, n. an asterisk

Serenol, a. sparkling as a star

Serenu, v. to sparkle

Serenwyl, n. epiphany

Serf, a. whirling; dizzy, giddy

Serfanol, a. startling; staring

Serfanu, v. to startle; to stare

Serfyll, a. unsteady; shattered

Serfylliad, n. a shattering

Serig, a. starred; spangled

Serigl, a. studded, spangled

Serigliad, n. a bespangling

Serliw, n. starlight

Serlo, n. a star-glow; sparkling

Serofydd, n. an astronomer

Serofyddol, a. astronomical

Serog, a. having stars, starry

Seroliaeth, n. the starry system

Seron, n. the starry system

Seroni, v. to systemis