Gobeithio y byddwch yn cael gwyliau braf.(I hope you have a nice holiday.)
You can't use nouns to describe things. You can use "nice" to describe nouns though as it is an adjective.E.G. That car looks nice
Youthful is a nice way to describe a senior citizen.
There are plenty of nice words that you could choose to use to describe a nice person you barely know. You could say that they are nice or sweet.
Nice words starting with the letter a to describe a person:ableadorableagreeableamazingappreciativeartisticastuteathleticattractiveawesome
because it is nice to
InformativeInterestedenthusiasticfunnyfriendlypatienthelpful
nice
its nice
Either is correct, but you would want to use the first in reference to a single holiday. "Have nice holidays" could be used when there are two holidays close together, like Christmas and New Years.
Some words to describe 'Cut Grass' are: Fresh, nice, and green.
I would go to England for an holiday becuse it a very nice place to go to