Gilruin
#2412
That’s causative “to make a slave, enslave”, so you want a long vowel -tā.
These are the comments on Sámo Collarwa's contribution “molta-”.
Right, I should have guessed. Thought the formative ending was appropriate, for some reason.
Also, (don’t know why I missed that before) long vowels shorten before consonant clusters, which gives us Q molta-, S moltha-.