deru-₂

“firm, solid, steadfast (as a tree)”

Widely acceptedqualitiesnature

firm

Extension of *deru- "tree/oak" into abstract quality of firmness. Gives English "true", "trust", "tree".

(s)teh₂n-“to thunder”Hreg-“to wet, to rain”angʷʰi-“eel, snake, water-serpent”bel-“strong, powerful”bʰerǵ-s-“to protect by enclosing”bʰerǵʰ-₂“high, elevated”bʰew-sis-“nature, growth, being”bʰew-tú-“growth, nature, coming-to-be”