SUB'TIL, a. L. subtilis. This word is often written subtle, but less properly.
1. Thin not dense or gross as subtil air subtil vapor a subtil medium.
2. Nice fine delicate.
I do distinguish plain
Each subtil line of her immortal face.
3. Acute piercing as subtil pain.
4. Sly artful cunning crafty insinuating as a subtil person a subtil adversary.
5. Planned by art deceitful as a subtil scheme.
6. Deceitful treacherous.
7. Refined fine acute as a subtil argument.
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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