Dull-bladed; dull-pointed, of an implement with a blade, as a knife, bolo, spear, trowel; of an implement with a point, as a crowbar, baliyang, needle, tantan.
Reference is especially to a poorly-tempered implement.
For something (actor -um- & patient) to become dull-bladed, or dull-pointed, as described above.
Maphod han hanggap'u ti kahup ya un ngumiluh panguma ti magānga.
My bolo is good because it will be a long time before it will become dull-bladed in using to clear an upland field because it is tempered.
For someone or something, as hardwood (actor umi- & inst) to cause an implement with a blade or point (patient i-) to become dull, as described above.
Umingiluh ne han ma'ulhin ayiw.
That hardwood caused (the bolo) to become dull-bladed.