Etymologically
← History of obsum

obsum Latin · revision 31107

19 Oct 2026, 00:20 by bogdan “la10k Latin batch la75m/b01” current version

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+ {{infobox|confidence=established|formation=compound|attested=c. 250–184 BC, Plautus|origins=ine-pro *h₁es-}}
+
+ ==Pronunciation==
+ * Classical: [ˈɔp.sũː]^(Wiktionary)
+ * Ecclesiastical: [ˈɔb.sum]^(Wiktionary)
+
+ ==Forms==
+ '''obsum''' (present infinitive obesse, perfect active obfuī, future active participle obfutūrus); irregular conjugation, suppletive, no passive, no supine stem except in the future active participle, no gerund^(Wiktionary)
+ The perfect is also spelled ''offuī'', and the prefix ''ops-''.^(OLD 2012)
+ Terence has the old subjunctive ''obsiet''.^(OLD 2012)
+ Festus (in Paul the Deacon) records a future ''obescet'', glossed “will harm or will help”.^(de Vaan 2008)^(Lewis & Short 1879)
+
+ ==Etymology==
+ It is a compound of [[m|la|ob-|t=against]] and [[m|la|sum|t=to be]].^(OLD 2012)^(Wiktionary) De Vaan lists it among the derivatives of ⟨sum⟩, which goes back to [[itc-pro|*es-]] and [[ine-pro|*h₁es-|t=to be]].^(de Vaan 2008)
+
+ ==Earliest recorded meaning==
+ De Vaan gives Plautus as its first author.^(de Vaan 2008)^(Köbler 2010)
+
+ ==Semantic evolution==
+ It is to be a hindrance or disadvantage, to do harm, usually with the dative, and is the opposite of [[prōsum]] “to be of use”.^(OLD 2012)^(Lewis & Short 1879) With the dative it is also to tell against someone, to damage their reputation, as Terence's “so that the name of gain may not tell against me”.^(OLD 2012) Church Latin glosses it “be against, be prejudicial to, hinder, injure”.^(Lewis & Short 1879)^(Stelten 1995)
+
+ ==Timeline==
+ * c. 250–184 BC – Plautus.^(de Vaan 2008)^(Köbler 2010)
+ * 190–159 BC – Terence of harming a reputation, with the old subjunctive ''obsiet''.^(OLD 2012)^(Köbler 2010)
+
+ ==Meanings==
+ ===Verb===
+ # To be a [[m|en|hindrance]] or disadvantage (to), be prejudicial, do harm; the opposite of ''prōdesse''.^(OLD 2012)^(Lewis & Short 1879)^(Wiktionary)
+ # ''(with dative)'' To tell against (someone), damage the reputation of.^(OLD 2012)
+
+ ==Related words==
+ * [[sum]]
+ * [[prōsum]]
+ * [[noceō]]
+ * [[officiō]]
+
+ ==References==
+ {{reflist}}