וַתִּהְיֶ֖יןָ מֹ֣רַת ר֑וּחַ לְיִצְחָ֖ק וּלְרִבְקָֽה׃ (ס)
And they were a bitterness of spirit unto Isaac and to Rebekah.
Targum Jonathan on Genesis
And they bowed in strange worship, and set themselves to rebel in their evil conduct against Izhak and against Rivekah.
Targum Jerusalem
And they were refractory, swelling in spirit with strange worship, and would not receive instruction either from Izhak or Rivekah.