(one's) heart is in (one's) boots British idiom UK informal
To feel sad or nervous.
Jane's heart was in her boots after her grandpa had passed away.
Mary's heart was in her boots to hear that they'd split up.
My mother's heart is always in her boots if we don't go home on time.
To be very anxious
To feel devastated because of a minor problem or accident
To feel that unpleasant or dangerous things likely happen to you
To cause someone to feel confused, worried, or upset
To cause someone to feel confused, worried, or upset