Verterbukh

In Yehoash's Tanakh, we came across this word (without 'keyn' and without 'on a' before it). Neither your dictionary nor Weinreich's showed the meaning.
We did find it in Harkavy's dictionary: any
Even if that meaning is now obsolete, I think your dictionary should include that meaning and show the status as obsolete.

The title page of a 1906 Vilna publication from the famous Romm Press reads DRUKERAY FUN VITVE ET GEBRIDER ROM.
What exactly does VITVE mean? Is this a slavicism? In Hebrew, the press is "ALMANAV V'AKHAV ROM," and the usual English translation of this press is, "the Widow and the Brothers Romm."

"(פון פאַך איז ברוך בצלאל געװען אַ זעמשער (הענטשקע-מאַכער"

אַז רחמיאל דער זעמשער מאַכט אַן אויוון קריגט ער שֺכר-לימוד"

פֿון די אויבן געבראַכטע זאַצן און אַנדערע איז קלאָר אַז 'זעמשער' איז אַ פֿאַך, נאָענט צו 'גאַרבער'. און האָט גאָרנישט צו טאָן מיט מעבל

Shouldn't the ayen be marked with the half-circle thingee (as in the pronunciation)?

What do people think about this word? A new Yiddish word? In the US it's used quite often (mishkababel / mishkebabel), but when I search it in Yiddish almost nothing. Is this a new Yiddish word? Or a pseudo-Yiddish word (like "klotz" in American English)?

Etymologically, it makes sense--mish is a mix in German, and babel is a mix in Hebrew. So one could expect something like מישגעבבלט, but I don't find anything. Thoughts?

For me, this is a very common word I hear among US Jews.

סע דאַכט זיך מיר אַז דאָס מערצאָל זאָל זײַן ,,אַפּיטרופּסים'', ניט „אַפּיטרופּוסים“.

This verb which has both a German prefix and a Slavic stem is not found in your verterbichel and means "to fall in love" with a somewhat derogatory connotation.

Also: "mostly."