'Conspired' in the Bible

Baasha son of Ahijah of the house of Issachar conspired against him, and Baasha struck him down at Gibbethon, which belonged to the Philistines. Now Nadab and all of Israel [were] laying siege to Gibbethon,

His servant Zimri the commander of half of the chariots conspired against him. Now he had been in Tirzah drinking [himself] drunk in the house of Arza who was over the palace in Tirzah.

The encamping army heard that Zimri had conspired and moreover had killed the king, so they made Omri the commander of the army of Israel king over all Israel in the camp on that day.