AIDIOS
This adjective is used only twice in the NT: Rom. 1:20 and Jude 6.
The Concordant Greek-English Keyword concordance gives the meaning: “unperceived”
The root of this word is id-, from the verb idein: “to see”
The adjective aidios has the prefix a- (the alpha privative) which negates the meaning of the word.
Cognates of this adjective are the nouns aidoion (“private parts”) and aids (“modesty; reserve; shame”)
The idea is that one keeps their private parts unseen, so as to be modest and show reserve.
The adjective idios and the noun idiots both have the same root id- (cf Liddell & Scott Lex.) as our
adjective.
The meanings given for the adjective private “private; personal.” Such things as aidoion (our
private parts) are normally kept “unseen” (a-idios).
The noun means “specific character; peculiar nature; property.”
If the noun were negated, then we could not see its specific character, peculiar nature, and
thus not know its properties.
With these words, it’s all about seeing, or not seeing. Modesty (aids)
means keeping something private unseen. Another adjective, aidmn, means “bashful” – that is, one
who does not want to be seen.
And then there is the noun aids, which Liddell & Scott give as the alpha privative a-, plus the verb idein
as it root, and thus list the resultant meaning as “unseen.”
English translations drop the iota and normally render this word “Hades,” but, as with the Concordant Literal New Testament, this should be rendered “the Unseen.”
A second meaning that Liddell & Scott give for this word is “blind.”
Here are my renderings of the two NT verses:
Rom. 1:20,
“For you see, from [the] creation (framing; founding of order out of chaos; settling) of [the]
ordered System (cosmos; universe; or: world of culture, religion and government) His invisible
things (unseen [qualities and attributes]) – both His imperceptible (unobservable) power,
ability and capacity, as well as divinity (Godship; God-state) – are habitually seen down the
line (or: are normally correspondingly perceived), being continually apprehended (grasped by
the mind; mentally conceived) in the results and by the effects of things which are made or
done, in order for them to be continuously defenseless (without an excuse).”
Jude 6,
“Besides that, those agents (or: folks having or bringing a message) not guarding (keeping
watch over; maintaining) the beginning of themselves (or: the rule of themselves), but to the
contrary, after leaving away from (= abandoning) the personal dwelling place (one’s own
abode or habitation), He has guarded, kept watch over and maintained under gloom (or: thick
darkness) by imperceptible (or: in unobservable) bonds, with a view to a judging (a sifting and
a separation for evaluating; a making of a distinction and a deciding) of a great Day (or:
pertaining to or whose source is a great day; or: which is [the] great Day).”
-Jonathan Mitchell N.T Translation-