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Definition 2025

intersum ‎(present infinitive interesse, perfect active interfuī, future participle interfutūrus); irregular conjugation

Irregular conjugation.

Conjugation of intersum (highly irregular, suppletive, active only)
indicative		singular			plural
indicative		first	second	third	first	second	third
active	present	intersum	interes	interest	intersumus	interestis	intersunt
	imperfect	intereram	intererās	intererat	intererāmus	intererātis	intererant
	future	intererō	intereris, interere	intererit	intererimus	intereritis	intererunt
	perfect	interfuī	interfuistī	interfuit	interfuimus	interfuistis	interfuērunt, interfuēre
	pluperfect	interfueram	interfuerās	interfuerat	interfuerāmus	interfuerātis	interfuerant
	future perfect	interfuerō	interfueris	interfuerit	interfuerimus	interfueritis	interfuerint
subjunctive		singular			plural
subjunctive		first	second	third	first	second	third
active	present	intersim	intersīs	intersit	intersīmus	intersītis	intersint
	imperfect	interessem, interforem	interessēs, interforēs	interesset, interforet	interessēmus, interforēmus	interessētis, interforētis	interessent, interforent
	perfect	interfuerim	interfuerīs	interfuerit	interfuerīmus	interfuerītis	interfuerint
	pluperfect	interfuissem	interfuissēs	interfuisset	interfuissēmus	interfuissētis	interfuissent
imperative		singular			plural
imperative		first	second	third	first	second	third
active	present	—	interes	—	—	intereste	—
active	future	—	interestō	interestō	—	interestōte	intersuntō
non-finite forms		active			passive
non-finite forms		present	perfect	future	present	perfect	future
infinitives		interesse	interfuisse	interfutūrus esse, interfore	—	—	—
participles		—	—	interfutūrus	—	—	—

intersum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
intersum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
Félix Gaffiot (1934), “intersum”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.
Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book, London: Macmillan and Co.
- to be present at secret consultations: consiliis arcanis interesse (Liv. 35. 18)
- to attend lectures: scholis interesse
- to take part in divine service (of the priest): rebus divinis interesse (B. G. 6. 13)
- to take part in the engagement: proelio interesse