The only attested form precludes a definite ascription of this word to a single lemma. There are two options:
- This form may represent an īn-stem lemma *𐌼𐌰𐌸𐌻𐌴𐌹 (*maþlei), from 𐌼𐌰𐌸𐌻 (maþl) + -𐌴𐌹 (-ei).
- This form may represent an i/ō-stem lemma *𐌼𐌰𐌸𐌻𐌴𐌹𐌽𐍃 (*maþleins), 𐌼𐌰𐌸𐌻 (maþl) + -𐌴𐌹𐌽𐍃 (-eins).
As noted in the etymology, it is not certain what the lemma (and thus the inflection) underlying this accusative singular form would have been.