The weak inflections of adjectives agree exactly with the noun ones:-

SINGULAR.

Masc. Neut. Fem.

_Nom._ g[=o]d-a, g[=o]d-e, g[=o]d-e.

_Acc._ g[=o]d-an, g[=o]d-e, g[=o]d-an.

_Dat._ g[=o]d-an, g[=o]d-an, g[=o]d-an.

_Gen._ g[=o]d-an, g[=o]d-an, g[=o]d-an.

\________________ __________________/

\/

PLURAL.

_Nom._ g[=o]d-an.

_Dat._ g[=o]d-um.

_Gen._ g[=o]d-ra.

The vowel- and consonant-changes are as in the strong declension.