From Longman Dictionary of Contemporary Englishrooted to the spot/floor/ground etcrooted to the spot/floor/ground etcNOT MOVINGso shocked, surprised, or frightened that you cannot move She stood rooted to the spot, staring at him. → root
Examples from the Corpus
rooted to the spot/floor/ground etc• For a moment, she was rooted to the spot.• He stood rooted to the spot.• So startled was he by this sudden onslaught, Ryker momentarily froze, rooted to the spot.• Unable to move, Philippa remained rooted to the spot.• For a few moments he had felt rooted to the floor and had been unable to move.• He stands still, his feet rooted to the ground, his knees locked.• Ashi found herself rooted to the spot in disbelief as she watched the threshing legs of her daughter. 