stumb-

“to stumble, trip, collide with”

Debatedmovementimpact

stumble, stump, stamp

Root yielding English stumble, stump, stamp with the sense of impeded motion.

bʰeh₂-d-“to go, step, walk”bʰer-eyo-“to carry repeatedly, bear habitually”bʰer-tó-“carried, borne”dhregh-“to pull, drag, carry”dreHb-“to step heavily, trample”dʰrebʰ-“to drive, push, run”dʰrebʰ-eyo-“to keep running, drive”dʰreyb-mn̥-“a driving, forced movement”