Most adjectives could be declined both in accordance with the strong and weak type.
agreed with the noun in gender, case and number
the adjective by its type of declension expressed the idea of definiteness (weak declension) or indefiniteness (strong declension), the meaning which was later to become expressed by a grammatical class of words unknown in Common Germanic — the article.
degrees of comparison (formed with the help of suffixes -iz/ōz and –ist/-ōst)
there were instances of suppletivism, i.e. use of different roots for different forms — a means common for mаnу Indo-European languages:
Goth leitils—minniza—minnists (little—less—least)
Rus хороший—лучше—лучший
The Germanic adjectives had:
two types of declension (called strong and weak). Most adjectives could be declined both in accordance with the strong and weak type.
agreed with the noun in gender, case and number
the adjective by its type of declension expressed the idea of definiteness (weak declension) or indefiniteness (strong declension), the meaning which was later to become expressed by a grammatical class of words unknown in Common Germanic — the article.
degrees of comparison (formed with the help of suffixes -iz/ōz and –ist/-ōst)
there were instances of suppletivism, i.e. use of different roots for different forms — a means common for mаnу Indo-European languages:
Goth leitils—minniza—minnists (little—less—least)
Rus хороший—лучше—лучший