ревун

Ukrainian

From рев(і́ти) / рев(ти́) (rev(íty) / rev(tý)) +‎ -ун (-un).

реву́н • (revún) m pers or m inan or m animal (genitive ревуна́, nominative plural ревуни́, genitive plural ревуні́в)

(personal, colloquial) bawler, howler (one who bawls or howls a lot)
(inanimate, nautical) siren (a device that makes a piercingly loud sound as an alarm or signal)
Synonym: сире́на f (syréna)
(animal) howler monkey, howler (a Central American and South American monkey of the genus Alouatta, noted for their loud call)

Declension of *реву́н*
(pers/inan/animal hard masc-form accent-b)
	singular	plural
nominative	реву́н revún	ревуни́ revuný
genitive	ревуна́ revuná	ревуні́в revunív
dative	ревуно́ві, ревуну́ revunóvi, revunú	ревуна́м revunám
accusative	ревуна́¹, реву́н² revuná¹, revún²	ревуні́в¹, ревуни́³ revunív¹, revuný³
instrumental	ревуно́м revunóm	ревуна́ми revunámy
locative	ревуно́ві, ревуні́ revunóvi, revuní	ревуна́х revunáx
vocative	реву́не revúne	ревуни́ revuný

¹Personal or animal.
²Inanimate.
³Inanimate or animal.

Bilodid, I. K., editor (1977), “ревун”, in Словник української мови: в 11 т. [Dictionary of the Ukrainian Language: in 11 vols] (in Ukrainian), volumes 8 (Природа – Ряхтливий), Kyiv: Naukova Dumka, page 476
“ревун”, in Горох – Словозміна [Horox – Slovozmina, Horokh – Inflection]‎^[1]