an- (2) intensive or superlative prefix carrying the idea of "very" or "most", seen in ancalima "most bright" (cf. calima "bright"), antara "very high, very lofty" and #anyára *"very old" or *"oldest" (the latter form occurring in the so-called Elaine inscription [VT49:40], there with the dative ending -n). Assimilated to am- before p-, as in amparca("k") "very dry", and to al-, ar-, as- before words in l-, r-, s- (though Tolkien seems to indicate that before words in l- derived from earlier d, the original quality of the consonant would be preserved so that forms in and- rather than all- would result). See also un-. (Letters:279, VT45:5, 36) Regarding the form of the superlative prefix before certain consonants, another, partially discrepant system was also set down in the Etymologies and first published in VT45:36. The prefix was to appear as um- or un- before labialized consonants like p-, qu-, v- (the consonant v preserving its ancient pronunciation b- following the prefix, thus producing a word in umb-), as in- (technically iñ-) before c- and g- (the latter presumably referring to words that originally had initial g-, later lost in Quenya but evidently preserved following this prefix), and as an- otherwise. However, this system would contradict the canonical example ancalima, which would have been *incalima if Tolkien had maintained this idea. – In a post-LotR source, the basic form of the prefix is given as am- instead (see am- #2). In this late conception, the prefix still appears as an- before most consonants, but as ama- before r, l, and the form an- is used even before s- (whether original or from þ), not the assimilated variant as- described above. General principles would suggest that the form am- should also appear before y- (so the form #anyára probably presupposes an- rather than am- as the basic form of the prefix, Tolkien revisiting the earlier concept in the Elaine inscription). (PE17:92)
