Most adjectives ending in -al change to -aux (masculine plural) or -ales (feminine plural) - see Forming the plural of adjectives ending in -al in French - but there are exceptions to that rule.
The plural form of some adjectives ending in -al in French
Look at these cases:
Ces tabourets sont bancals.These stools are wobbly.
Ce sont des gens banals.These are ordinary people.
J'adore les défilés navals!I love naval parades!
The following adjectives are exceptions which take -s in the masculine plural form:
| Masculine singular | Masculine plural | English |
| banal | banals | banal / ordinary |
| bancal | bancals | wobbly / rickety |
| fatal | fatals | fatal / lethal |
| naval | navals | naval |
| natal | natals | natal |
| glacial | glacials / glaciaux | freezing |
| final | finals / finaux | final |
ATTENTION:
Both plural forms of glacial and final are accepted in French: regular (glaciaux / finaux) and irregular (glacials / finals)
Il y a des vents glacials aujourd'hui! There are some freezing winds today!
Les derniers jours ont été glaciaux !The last days have been freezing !
J'ai reçu mes résultats finaux.I got my final results.
J'ai reçu mes résultats finals.I got my final results.
See also Forming the plural of French nouns ending in -al
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