-astre.

In French this suffix has the form -âtre.

óulivastre (Fr. olivâtre), _olive in color_.


-at.

Coustat is in French _côté_ (side).

The suffix is often diminutive.

auc, _a gander_.
aucat, _gosling_.
passero, _sparrow_.
passerat, _small sparrow_.


-au, -alo.

This is the form of the widely used suffix -al. Mistral uses paternau
for _paternal_, and also the adjective formed upon paire, _father_,
peirenau, peirenalo, _fatherly_.

bourg, _city_.
bourgau, bourgalo, _civil_.