Originally
From The Beginning, By Nature
adverb, の adjective
It's the origin of all origins, so it's the way it was originally, from the beginning, or by nature. You get the idea.
Note that this is frequently written in just hiragana, but you'll encounter the kanji version too!
This is just the kun'yomi reading you learned with 元, but twice, so you should be good to go!
元々は一つだった
originally there was one
元々はキライだった
I originally didn't like it
元々はデザイナーだった
one was originally a designer
元々ある
something exists by nature, something has existed from the start
元々できる
can do something from the beginning
元々ない
something doesn't exist by nature, something hasn't existed from the start
元々少ない
scarce to begin with
このホテルは元々アパートだったんです。
This hotel was originally an apartment.
あのモデルさんって、元々はデザイナーだったんでしょ？
That model used to be a designer, right?
元々この家にはトイレもキッチンもあったんです。
This house originally had a bathroom and kitchen in it.