The apparently causative form אעברת in
1QapGen 26:20 is more likely to be an error caused by the previous series of C forms rather than a passive.
Some of the unusual semantic developments displayed in this root (e.g. "to overwhelm", "become pregnant") may be due to conflation with remnants of the separate Semitic root
ḍbr "to heap up"; see note s.v.
ṣbr vb.