highly inflected: gender, case, and number

se ealda mann   

se  and a are uniquely masculine, nominative, singula


two different ‘declensions’: choice depends upon the syntax of the sentence

‘definite’ or ‘weak’ declension, if the adjective is in a ‘specifying’ function, esp. preceded by a determiner (e.g. a demonstrative or a possessive pronoun)

se goda cyning

Ic séo ðone gódan cyning Eadmund.

indefinite’ or ‘strong’ declension, if the adjective isn’t preceded by a determiner.

Þæt wæs gód cyning.

Ic séo gódne cyning