√RŌ/ORO root. “up(wards); rise (up), go high, mount”
This invertible root had a long history in Tolkien’s writings. Its earliest iteration was as a pair of roots in the Qenya Lexicon of the 1910s: ᴱ√OŘO [OÐO] with derivatives having to do with the “dawn”, which it was much confused with ᴱ√ORO¹ whose derivatives were rising things (QL/70). The latter had derivatives like ᴱQ. orme “summit, crest, hilltop” and ᴱQ. orto- “raise” (QL/70), and Tolkien mentioned an inverted variant ᴱ√RŌ or ᴱ√ROHO with derivatives like ᴱQ. róna- “arise, rise, ascend” (QL/80). The contemporaneous Gnomish Lexicon also gave it as in an invertible root ᴱ√rō-, oro with derivatives like G. oros “rising” and G. ront “high, steep” (GL/63, 66).
The root reappeared in The Etymologies of the 1930s as ᴹ√ORO “up, rise, high” and ᴹ√RŌ “rise” (Ety/ORO, RŌ). The root was mentioned very frequently in his writings from the 1930s, 40s, 50s and 60s, generally glossed “rise” or “up(wards)”. Thus √RŌ/ORO “rise” was very well established in Tolkien’s mind, but distinct ᴱ√OŘO “*dawn” seems to have been abandoned very early.
References ✧ Let/426; NM/176; PE17/63-64, 112, 171, 182; PE18/88-89, 106; PE22/129, 133-134, 156, 163; VT41/11, 13; VT48/25, 31
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ᴹ√RŌ/ORO root. “rise, up, high”
References ✧ Ety/ORO, RŌ; EtyAC/ORO, RŌ; PE18/39; PE22/98
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ᴱ√OÐO root. “*dawn”
References ✧ LT1A/Oromë; QL/70
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ᴱ√ORO¹ root. “steepness, rising”
References ✧ GL/66; LT1A/Kalormë, Oromë, Orossi, Tavrobel; QL/70, 80
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