There are so many words in the English language that have very little use in progressive society that we should each buy dictionaries and one of those handy typewriter correction ribbon pens that allows you to "white-out" or omit writing or printing, and go page by page in the dictionary omitting words and references that have absolutely no meaning in today's advanced society.
The word "spirit" is, in one context, an antiquated representation of the more technically correct term "euphoria."
In another context, "spirit" is representative of the effects of alcohol. Still another context for the word "spirit" falls into the arena of exuberance or enthusiasm.
The sinister side-effect of the word "spirit" is its reinforcement of false beliefs in ghosts. The word "Spirit" passes memes that cognitively reinforces false ideas that were conditioned into us as gullible, ignorant children.
On the other side of the argument, keeping the word "spirit" helps us understand those who still use the word and believe its literal meaning.
We may only need to parse the term "belief" away from the word "faith" to render worthless, any dictionary words with poisonous superstitious memes.
The word "belief" is the acceptance that something is true, while the word "faith" is complete trust in something or someone.
Atheists have no complete trust in anything and that is indeed the symptom of a very healthy mind. The word "belief" requires no "faith" when all scientific evidence stands on conclusions in support of the belief.
If anything at all requires "faith," apparently the evidence is lacking and therefore I will walk away from a used car dealer who asks for cash up-front for a vehicle I have yet to drive, based on the car dealer's plea for me to have "faith" in the vehicle.
Have T-shirts made that say "Just say no to faith."
How many other faith-based or superstitious-based words do we still have floating around in our vocabulary?