כָּשַׁל
kashal (kaw-shal') v.
1. to totter or waver (through weakness of the legs, especially the ankle)
2. (by implication) to falter, stumble, faint or fall
[a primitive root]
KJV: bereave (from the margin), cast down, be decayed, (cause to) fail, (cause, make to) fall (down, -ing), feeble, be (the) ruin(-ed, of), (be) overthrown, (cause to) stumble, X utterly, be weak.