I was surprised that the Germanic origin of this has a PIE heritage.

One would think that this simple word has an Anglo Saxon origin. However, it is Latin based, from plicare, to fold. I like how the many senses of the verb and the noun, not without reason, evolved from the root.

Yes.

Make better.

Make worse.

If you are as inept at Scrabble as I am, you appreciate three letter words in abundance. It should be no surprise that this is strictly of Germanic origin. Capitalized, interestingly as DIN, it is the acronym for Deutsche Industrie- Norm, German Industrial Standard.

Thanks for the word Grogie. I saw this word and I knew immediately that it was submitted by you. I am also a Michigander.

From Latin, onus, through French to English. Burdensome.

Is this merely another way to say binocular vision? Interesting evolution of this word from Greek.

I believe this word comes to the English speaking world unaltered in spelling and meaning. We grabbed it during that great migration/theft/borrowing of Latinate words in the 16th century. Meaning, meanwhile.

Is a bob tailed horse the same as a cocktailed or docktailed horse?

Capable of being mixed, as water miscible oil paint. From Latin miscere for, to mix.

Literal translation: no words for mood. People with this sub clinical disorder, which is about 10% of the population, are unable to identify and describe emotions in themselves.

This is so commonly associated with liar, as in he is such a pathological liar. The root is disease, so that a pathologist is NOT a medical doctor who lies, but one who studies disease. Someone who lies frequently it appears does so as if diseased.

Mostly shortened to MO, or method of operation. It should come as no shock that this is direct from Latin, but came to English in 1600s. Modus is much more ancient, from PIE, med, to take appropriate measures.
Seems to me MO was commonly use in film noire. I think it is going out of favor.