adj. weak; ineffective, poor
adv. weakly; poorly
n. weakness
v. to weaken

Qostiid sahlo aak.
Prophecy is a weak guide.
(Paarthurnax, 0003F9E1)

Modir fin Gut wahlaan qethsegol zeymahii vahrukt, Oskar fin Mey, wen Zul los sahlo, ahrk ni sahrot Thu’um do ok brod.
Modir the Far raised this stone for his brother, Oskar the Fool, whose Voice was weak, and not the mighty Thu’um of his clan.
(Word Wall for Throw Voice)

Draal ni fah Drem, fah grik los hind do sahlo ahrk nivahriin.
Pray not for Peace, for such is the wish of the weak and cowardly.
(Word Wall for Drem, Kyne’s Peace)

Means both ‘ineffective’ and ‘not strong’.