Shulchan Aruch Even HaEzer 119.4 said that there's is a Mitzva to divorce one's bad wife.
אִשָּׁה רָעָה (ה) בְּדֵעוֹתֶיהָ, וְשֶׁאֵינָהּ צְנוּעָה כִּבְנוֹת יִשְׂרָאֵל הַכְּשֵׁרוֹת, מִצְוָה לְגָרְשָׁהּ:
A wife who has a bad temper (Baer Heytev (paraphrasing Yevamot 63b: One who prepares for him the tray and turns her back upon him.) and which is not modest as Yisrael girls, and who is quarrelsome, it is a mitsva to divorce even if she is the first wife
What is considered a bad wife?
Bais Shmuel there said:
היינו מקשטא ליה תכא ומהדרא ליה גבה שהיא בעלת מריבה מצוה לגרשה... Which I do not know what does it mean?
What I found is Yevamos 63b:
"One who prepares for him (Her husband) the tray and turns her back upon him (Euphemism)."
But I do not understand it.
How is the "Euphemism" understood?
See Yebamot 63b, see Mishna Ketubot 7, 6
תכא is table, it is a modest (tsniut) figurative image related to conjugal life.
See Nedarim 20b for the use of the word "table" (A woman once came before Rabbi and said, 'Rabbi! I set a table before my husband,)
See Rabi Yehuda Bar Natan
מקשטא ליה פומא = wait until a meal to offend
מהדרא ליה גבא= turn her back to not eat together (Kepshuto, not euphemism)