ser-

“to flow, to move”

Widely acceptedmotionwater

flow, stream

Root for flowing motion, yielding Latin serum, Greek horme (impulse), Sanskrit sarati.

(s)tew-“to push, to strike”Hreg-“to wet, to rain”bʰer-“to carry, to bear”bʰleh₁-“to blow, to puff”bʰlewH-“to overflow, to well up”bʰredʰ-“to wade through, to cross water on foot”bʰreg-“to break, to shatter”dewk-“to pull, to lead by pulling”