Horwath
Legend
I would rule that you can use it in one hand with disadvantage.
But, here's a feat fix:
Feat:
Monkey grip,
+1 str or con
You can wield any twohanded melee weapon as one handed, but you lower the damage die by one step:
1d12/2d6->d10
d10->d8
d8->d6
you can do this with heavy weapon as medium size, but only non-heavy as small size. But with this feat small characters can use heavy twohanded weapons in two hands with no penalty.
But, here's a feat fix:
Feat:
Monkey grip,
+1 str or con
You can wield any twohanded melee weapon as one handed, but you lower the damage die by one step:
1d12/2d6->d10
d10->d8
d8->d6
you can do this with heavy weapon as medium size, but only non-heavy as small size. But with this feat small characters can use heavy twohanded weapons in two hands with no penalty.