The first radical of this word is guttural; this affects the adjacent vowels.
Singular
Plural
Masculine
Feminine
Masculine
Feminine
אַחֲרוֹן
acharon
last
אַחֲרוֹנָה
acharona
last
אַחֲרוֹנִים
acharonim
last
אַחֲרוֹנוֹת
acharonot
last
Singular
Masculine
אַחֲרוֹן
acharon
last
Feminine
אַחֲרוֹנָה
acharona
last
Plural
Masculine
אַחֲרוֹנִים
acharonim
last
Feminine
אַחֲרוֹנוֹת
acharonot
last