adj understanding, intelligent
deallusion npl intelligentsia
deallusrwydd nm intelligence
deau adj, nf right ▶ nm south
debentur (-on) nm debenture
debyd (-au) nm debit
debydu vb to debit
dec (-iau, -s) nm deck
decilitr (-au) nm decilitre
decimetr (-au) nm decimetre
decstros nm dextrose
dectant nm ten-stringed instrument, psaltery
dechrau vb to begin ▶ nm beginning
dechreuad (-au) nm beginning
dechreunos nf nightfall, dusk
dechreuol adj initial
dechreuwr (-wyr) nm beginner
dedfryd (-au) nf verdict; sentence
dedfrydu vb to sentence
dedlein (-s) nf deadline
dedwydd adj happy, blessed
dedwyddwch, dedwyddyd nm happiness, bliss
deddf (-au) nf law, statute, act
deddfeg nf jurisprudence
deddfegwr (-wyr) nm jurist
deddfol adj legal, lawful
deddfu vb to legislate, to enact
deddfwr (-wyr) nm legislator
deddfwriaeth nf legislation, legislature
deddfwriaethol adj legislative
deddlyfr (-au) nm statute book
de-ddwyrain nm southeast
defni vb to drip, to trickle
defnydd (-iau) nm material, stuff; use
defnyddio vb to use, to utilize, to employ; defnyddio’r cwbl o, defnyddio’r cyfan o use up
defnyddiol adj useful
defnyddioldeb nm usefulness, utility
defnyddiwr (-wyr) nm user, consumer
defnyn (-nau) nm drop
defnynnu vb to drop, to drip, to dribble, to distil
defod (-au) nf custom; rite, ceremony
defodaeth nf ritualism
defodol adj ritualistic
defosiwn (-ynau) nm devotion
defosiynol adj devotional, devout
deffro, deffroi vb to rouse; to wake
deffroad (-au) nm awakening
deg adj ten ▶ nm (-au) ten
degaidd adj denary
degawd (-au) nm decade
degiad (-au) nm decimal
degol (-ion) nm, adj decimal
degoli vb to decimalise
degoliad nm decimalisation
degolyn (degolion) nm decimal
degwm (-ymau) nm tenth, tithe
degymu vb to tithe
dehau, deheu see deau
deheubarth, deheudir nm southern region, south
deheuig adj dexterous, skilful
deheulaw nf right hand
deheuol adj southern
deheurwydd nm dexterity, skill
deheuwr (-wyr) nm southerner
deheuwynt nm south wind
dehongli vb to interpret
dehongliad (-au) nm interpretation
dehonglwr (-wyr), dehonglydd (-ion) nm interpreter
dehydrad (-au) nm dehydration
dehydru vb to dehydrate
deial (-au) nm dial
deialog (-au) nmf dialogue
deialu vb to dial
deifio vb to singe, to scorch; to blast; to dive
deifiol adj scorching, scathing
deifiwr (-wyr) nm diver
deigryn (dagrau) nm tear
deilbridd nm humus
deildy (-dai) nm bower, arbour
deilen (dail) nf leaf
deilgoll adj deciduous
deiliad (-on, deiliaid) nm tenant; subject
deiliant (-nnau) nm foliage
deilio vb to leaf
deiliog adj leafy
deillio vb to proceed, to emanate, to issue
deinameg nf dynamics
deinamig adj dynamic
deinamo (-s, -au) nm dynamo
deincod nm teeth on edge
deincryd nm chattering or gnashing of teeth
deintio vb to