A Graduated English-Welsh Spelling Book. John Lewis
Ring, modrwy: seinio
Ripe, addfed: addfedu
Rise, codiad: codi
Risk, perygl; antur: peryglu
Rite, defod, arfer
Road, ffordd
Roam, crwydro
Roan, brych
Roar, rhuad: rhuo
Robe, gwisg: gwisgo
Rock, craig: siglo
Roll, rhol; plyglyfr: rholio
Rood, rhwd, pedwaran erw
Roof, nen, to: toi
Rook, ydfran
Room, ystafell, lle
Root, gwreiddyn: gwreiddio
Rope, rhaff
Rose, rhosyn
Rote, cylchred: dysgu allan
Rout, ymlid; terfysgu
Rude, difoes
Rule, rheol: llinellu
Rump, cloren, cynffon
Rush, brwynen; rhuthr: rhuthro
Rust, rhwd: rhydu
Sack, sach: sachu
Safe, cellgrog; diogel
Sail, hwyl: hwylio
Sake, achos, mwyn
Sale, gwerth, arwerth
Salt, halen: halltu
Same, un, yr un
Sand, tywod
Save, eithr, ond: cadw, gwared
Scab, crachen, cramen
Scar, craith: creithio
Scum, ewyn: diewynu
Seal, morlo; sel: selio
Seam, gwrym, gwnïad
Sear, serio
Seat, eisteddfa; gosodiad
Seed, had: hadu
Seek, ceisio
Seen, gweledig
Self, hun, hunan
Sell, gwerthu
Send, anfon, danfon
Shed, lluest: tywallt
Shin, crimog
Ship, llong: llongi
Shod, pedoledig
Shoe, esgid; pedol: pedoli
Shot, ergyd: saethedig
Shop, maelfa
Show, golygiad: dangos
Shun, gochelyd
Shut, cauad: cau
Sick, claf, sal: clefychu
Side, ochr: ochri
Sift, gogrynu
Sigh, ochenaid: ocheneidio
Sign, arwydd: arwyddo
Silk, sidan
Sill, trothwy, rhiniog
Sing, canu
Sink, ceuffos: suddo
Sire, tad, tadwys
Site, sefyllfa, safle
Size, maint; glud
Skim, dihufenu
Skin, croen: blingo
Skip, llam: llemain
Slab, llech
Slay, lladd
Slew, lladdwyd
Slip, llithred: llithro
Slit, hollt: hollti
Slow, araf, annyben
Slug, malwen; pelenig hirgron
Slur, gwarthnod, llithren
Slut, budrog
Snow, eira: bwrw eira, odi
Snug, cryno, clyd
Soak, mwydo
Soap, sebon: seboni
Soar, uch-hedeg
Soft, meddal; tyner
Soil, pridd, tir: diwyno
Sold, gwerthedig
Sole, unig; gwadn: gwadnu
Some, rhai; rhyw; peth
Song, cân
Soon, yn fuan
Soot, huddygl
Sore, dolur; dolurus
Sort, math: trefnu
Soul, enaid
Sour, sur: suro
Span, rhychwant
Spar, bollt; gwydrfaen
Spew, cyfogi
Spin, nyddu
Spit, bêr: poeri
Spot, ysmot: ysmotio
Spun, nyddedig
Spur, yspardun: ysparduno
Stab, brath, gwân: gwanu
Stag, carw
Star, seren
Stay, arosiad: aros
Stem, paladr, corsen: gwrthnofio
Step, cam; ffon ysgol: camu
Stew, arferwi
Stir, ystwr; cyffroi; symmud
Stop, arosiad; rhwystro; cau
Stow, trefnu
Such, cyfryw, y fath
Suck, sugn; sugno
Suds, sebondrwyth
Suit, par; cwyn: cyfatebu
Sure, sicr, gwir
Surf, môrchwydd, ymchwydd