For those who were brought up using the expression, and who never stopped saying “Holy Ghost” in their prayers and devotions, the meaning is plain, unambiguous, and always did and always will refer to the Third Person of the Trinity.
For those people, the expression “Ghost” never had the connotation “ghostlike” in the sense you refer to: (potentially wicked) incoporeal beings of folklore or inane children’s cartoons. It simply translates spiritus.
You mean to tell me that there were no “ghosts” or “ghost stories”, “ghostly apparitions”, etc, before Vatican II?
If “Spirit” is to be preferred on the grounds that it more closely resembles the Latin, then we ought to jettison “Holy” as well (another word with a Germanic (
not German) etymology). In another thread on a CAF forum, I suggested
“Sanctified Spirit” might fit the bill. While we’re at it, let’s Latinize the syntax as well:
“Spirit Sanctified.”
Main problem with that is that “sanctified” is not a translation of
“sanctus” – to be “sanctified” means to be "made
sanctus" – the Holy Spirit is already
“sanctus”. So calling the Holy Ghost/Spirit “Spirit Sanctified” would be heretical.

AFAIK, there is no Romance-descended word in English for “sanctus”, hence we use the Germanic (i.e. Anglo-Saxon) descended word “holy”.
I think it’s a usage thing, as mentioned above. When first translated into English, I guess, it was “Holy Ghost”, and stayed that way. In today’s English, “Holy Spirit” would be better – assuming the Word came to us first today. IMHO, “Holy Spirit” seems to “work” better when you read things like Genesis: “1 In the beginning God created heaven, and earth. 2 And the earth was void and empty, and darkness was upon the face of the deep; and the **spirit **of God moved over the waters.”
I just did a quick search of the DR online for the word “Ghost”: 102 hits, mostly in the NT; the ones that weren’t “Holy Ghost” were
all in the form of the idiom “give up the ghost”.
I also did a search of “spirit”, and got 489 hits, examples:
- Numbers 11:25 And the Lord came down in a cloud, and spoke to him, taking away of the **spirit **that was in Moses, and giving to the seventy men. And when the **spirit **had rested on them they prophesied, nor did they cease afterwards.
- Genesis 1:2 And the earth was void and empty, and darkness was upon the face of the deep; and the spirit of God moved over the waters.
- Matthew 3:16 And Jesus being baptized, forthwith came out of the water: and lo, the heavens were opened to him: and he saw the Spirit of God descending as a dove, and coming upon him.
- Matthew 12:31 Therefore I say to you: Every sin and blasphemy shall be forgiven men, but the blasphemy of the **Spirit **shall not be forgiven.
- Mark 1:10 And forthwith coming up out of he water, he saw the heavens opened, and the **Spirit **as a dove descending, and remaining on him…12 And immediately the **Spirit **drove him out into the desert.
- Luke 4:1 And Jesus being full of the Holy Ghost, !] returned from the Jordan, and was led by the Spirit into the desert,…
Now since I found only either “Spirit” or “Holy Ghost”, I looked up “Holy Spirit” (8 hits):
- Psalms 50:13 Cast me not away from thy face; and take not thy holy spirit from me.
- Wisdom 9:17 And who shall know thy thought, except thou give wisdom, and send thy Holy Spirit from above:…
- Ephesians 5:18 And be not drunk with wine, wherein is luxury; but be ye filled with the holy Spirit,…
One of the things I find problematic is the inconsistent capitalization. (I also wish they’d capitalize the personal pronouns when referring to any of the Trinity.)
Again, only my opinion, but what recommends “Holy Spirit” is that one can more directly tie it to “Spirit of God” or “Your Spirit”, in that the Spirit is a Person, One of the Godhead, not an “emanation” of God. What recommends “Holy Ghost” is tradition: it’s what was used first, and has longevity on its side, and a meaning that hasn’t changed. I personally use Holy Spirit (not by preference, but by habit), unless called for differently, say by the words of a hymn (“Come, Holy Ghost”), and have no problem with either.