Yes, there are words beginning with l in Welsh. The misconception that there are not stems from the letter Ll which is a separate letter in the Welsh alphabet (can be found on Wikipedia) as well as the L we have in English.
To make the Ll sound you put your tongue on the roof of your mouth and blow air past it like pronouncing an l word.
For example, Llantrisant is not a spelling mistake but would be pronounced as if saying Lantrisant but with the pronounciation for the Ll sound.
lucrative
lull
Loyal, likeable and lively are nice words. They begin with the letter L.
Isthmus, island
Leery, as in, He was leery of the too-good-to-be-true deals he kept finding on Craigslist.
iaith (language)
No because x isn't in the welsh alphabet
Subtitle/Isdeitl
Llanelli is a town in Wales
penol its one l not two two l's in welsh makes the noise like when you say llewelyn
Ebol (colt, filly)
"Uwch" is a Welsh word that begins with the letter "u." It means "above" or "higher" in English.
Some words to describe a person beginning with L are:lackadaisicallameLatinlaughinglazyleanlegendarylethargiclevel headedlikablelikelylimplithelittlelivelylividloathsomelocallogicallonelyLovablelovelylucidluckylying
Il
"Lucky" is a five letter word beginning with l
Large.
leeway