Plainly
look up a word, understand it — no rabbit hole
serene
adjectivesuh-REEN
meaning in plain English
Think of a smooth pond at dawn with no ripples; that completely calm, undisturbed feeling is serene.
Think of a calm sea at sunset—that's serene.
for example
The garden felt serene, with only the soft hum of bees in the air.
A serene setting is like a quiet room where nothing rattles you. Imagine lounging in a sunlit meadow and feeling totally at ease.