swoon (subs.) Copy link Outline 1. dēfectio, ōnis, f.2. *syncŏpē, es, or syncŏpa, ae, f. (very late, and not to be used in writing Lat.). Phr. • swoon (subs.): 1. dēfectio, ōnis, f.: Plin. 23, prooem. § 4. 2. *syncŏpē, es, or syncŏpa, ae, f. (very late, and not to be used in writing Lat.). Phr.: to fall down in a s., collabi, Suet. Ner. 42.