@@Indeclinable 

 The indeclinable adjectives end in -i or -a. They are not comparable. They originated from regular weak adjectives, the different endings marking gender. 

 @@Numbers 

 Einn follows the pronominal declension, and hundrað is weak and neuter-only. Tvau, bœði, þrjú, and fjǫgur have only plural, and their declension follows. All other cardinal numbers are indeclinable. 

 The distributives and multiplicatives are all strong adjectives. The ordinals are weak, except for fyrstr and annarr, which are strong.