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Definition 2024

dēsum ‎(present infinitive deesse, perfect active dēfuī, future participle dēfutūrus); irregular conjugation

I am wanting/lacking
I fail, I miss
I abandon, I desert, I neglect
Dimicanti de fama deesse.‎
To abandon one whose reputation is attacked.
I am away, I am absent, I am missing

Conjugation of desum (highly irregular, suppletive, active only)
indicative		singular			plural
indicative		first	second	third	first	second	third
active	present	dēsum	dēes	dēest	dēsumus	dēestis	dēsunt
	imperfect	dēeram	dēerās	dēerat	dēerāmus	dēerātis	dēerant
	future	dēerō	dēeris, dēere	dēerit	dēerimus	dēeritis	dēerunt
	perfect	dēfuī	dēfuistī	dēfuit	dēfuimus	dēfuistis	dēfuērunt, dēfuēre
	pluperfect	dēfueram	dēfuerās	dēfuerat	dēfuerāmus	dēfuerātis	dēfuerant
	future perfect	dēfuerō	dēfueris	dēfuerit	dēfuerimus	dēfueritis	dēfuerint
subjunctive		singular			plural
subjunctive		first	second	third	first	second	third
active	present	dēsim	dēsīs	dēsit	dēsīmus	dēsītis	dēsint
	imperfect	dēessem, dēforem	dēessēs, dēforēs	dēesset, dēforet	dēessēmus, dēforēmus	dēessētis, dēforētis	dēessent, dēforent
	perfect	dēfuerim	dēfuerīs	dēfuerit	dēfuerīmus	dēfuerītis	dēfuerint
	pluperfect	dēfuissem	dēfuissēs	dēfuisset	dēfuissēmus	dēfuissētis	dēfuissent
imperative		singular			plural
imperative		first	second	third	first	second	third
active	present	—	dēes	—	—	dēeste	—
active	future	—	dēestō	dēestō	—	dēestōte	dēsuntō
non-finite forms		active			passive
non-finite forms		present	perfect	future	present	perfect	future
infinitives		dēesse	dēfuisse	dēfutūrus esse, dēfore	—	—	—
participles		—	—	dēfutūrus	—	—	—

dēsum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
desum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
Félix Gaffiot (1934), “dēsum”, in Dictionnaire Illustré Latin-Français, Paris: Hachette, page 510.
Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book, London: Macmillan and Co.
- I have no time to do something: tempus mihi deest ad aliquid faciendum
- to neglect an opportunity: occasioni deesse
- to assist, stand by a person: adesse alicui or alicuius rebus (opp. deesse)
- to accede to a man's petitions: alicui petenti satisfacere, non deesse
- I have nothing to write about: deest mihi argumentum ad scribendum (Att. 9. 7. 7)
- to answer every question: percontanti non deesse (De Or. 1. 21. 97)
- we have no expression for that: huic rei deest apud nos vocabulum
- to neglect one's duty: officio suo deesse (Fam. 7. 3)
- to take no part in politics: rei publicae deesse (opp. adesse)
- to further the common weal: saluti rei publicae non deesse
“dēsum” on page 529 of the Oxford Latin Dictionary (1st ed., 1968–82)