A name given by Nerdanel to one of her youngest children when Fëanor insisted she given them distinct names, though she did not say to which it applied (PM/353). It is a masculinized form of umbar “fate, doom”. Fëanor altered it to the less ominous sounding Ambarto.
Quenya
Umbarto
fated
umbarto
masculine name. Fated
umbar
fate, doom
umbar (umbart-, as in dat.sg. umbarten) noun "fate, doom" (MBARAT), also name of tengwa #6 (Appendix E).Cf. Umbarto. In the pre-classical Tengwar system presupposed in the Etymologies, umbar was the name of letter #18 (VT45:33), which tengwa Tolkien would later call malta instead changing its Quenya value from mb to m. In the word Tarumbar "King of the World" (q.v.), umbar appears to be a variant of Ambar (q.v.) instead.
umbar
noun. fate, doom, curse
amarto
fate
amarto noun "Fate" (also ambar) (LT2:348; in LotR-style Quenya rather umbar, umbart-)
Ambarussa
top-russet
Ambarussa masc. name "top-russet", alternation of Umbarto, mother-name (never used in narrative) of Telufinwë = Amras (PM:353-354)
ambarussa
masculine name. Top-russet
ambar
fate, doom
ambar (2) noun "fate, doom" (variant of umbar?) in Turambar (SA:amarth); stem ambart- (PE17:66), instrumental ambartanen "by doom" (Silm ch. 21, UT:138, PE17:66). The early "Qenya" lexicon has ambar "Fate", also amarto (LT2:348)
marta
fate
marta (3) noun "fate" (VT45:33, VT46:13) Cf. marto.
Umbarto masc. name, "Fated", mother-name (never used in narrative) of Telufinwë = Amras. The ominous name was altered to Ambarto by Fëanor. (PM:353-354)