Plainly
look up a word, understand it — no rabbit hole
seldom
adjectiveSEL-dum
meaning in plain English
Not happening very often.
Think of a shy squirrel that shows up seldom at the feeder, so you only see it now and then.
for example
I seldom go to the movies.
If you only see a friend a few times a year, you see them seldom. It means it doesn't happen a lot.