G. #-uos#: SENATVOS; #-ū# (66) SENATV; #-uus#, in the imperial age
(29, 1): EXERCITVVS. D. #-uei# (29, 2): SENATVEI. Ac. #-u# (61): MANV.
Ab. #-uu# (29, 1): ARBITRATVV; #-uō#, once, by some thought to be for
#-ūd# (426); MAGISTRATVO. Plural: N. #-uus# (29, 1): MAGISTRATVVS.
594. #domus#, _house_, F., has stems of two forms, #domu-# and #domo-#
(401); it is declined as follows: N. #domus#, G. #domūs#, rarely #domī#,
D. #domuī# or #domō#, Ac. #domum#, Ab. #domō# or #domū#, Locative
#domī#, rarely #domuī#. Plural: N. #domūs#, G. #domuum#, later
#domōrum#, D. and Ab. #domibus#, Ac. #domōs#, less commonly #domūs#.
595. Some other substantives have an #-u-# stem in some of their cases,
and an #-o-# stem in others: see #angiportus#, #arcus#, #caestus#,
#colus#, #cornū#, #cornus#, #cupressus#, #fīcus#, #fretus#, #gelus#,
#laurus#, #murtus#, #penus#, #pīnus#, #quercus#, #rīctus#, #tonitrus#,
in the dictionary.
STEMS IN #-ē-#.
_The Fifth Declension._
Genitive singular #-ē̆ī#, genitive plural #-ē-rum#.