5. Bq. _ar_ 'male'; PIE *h2/4né:r 'man, hero'.
If _ar_ indeed reflected *anar as you claim,
the northern form would be *ahar, and in fact under #166 you refer northern
_zahar_ 'old' (southern _zar_) to *zanar.
But then you say *-ar in *zanar may be identical to _ar_ 'man, male',
whose protoform you insist is *anar, so the REAL protoform of _zahar_ must be
*zananar.
>
[Tavi]
Actually,
Basque zahar 'old' does NOT have a medial nasal nor it contains ar
'male', whose Iberian counterparts are respectively sakar, tar. The
protoform *anar actually corresponds to Basque ar, a~ar 'worm'.
>
[DGK]
That means BOTH Gianfranco's #5 and #166 are unjustifiable on the Basque side.
[Tavi]
Please notice /r/ is these words is a trill rhotic, which is a different phoneme than the tap rhotic /R/ in e.g. bero /beRo/.
[DGK]
In my personal notes I follow Alessio and a few others in writing such words with -r' when they show the trill with vocalic suffixes, like _arra_ 'the male'. The handbooks cite only pronouns, some recently borrowed nouns, and the native nouns _hor_ 'dog', _ur_ 'water', and _zur_ 'wood' as Basque words ending in weak -r (i.e. an underlying tap rhotic).