Editing Modus operandi (section)

== Plural ==
The plural is {{lang|la|modi operandi}}.<ref>{{cite web |title=modus operandi |url=https://www.merriam-webster.com/dictionary/modus%20operandi |website=merriam-webster.com |publisher=Merriam–Webster |access-date=5 December 2023}}</ref><ref name="modus operandi">{{cite book |editor1-last=Barber |editor1-first=Katherine |title=The Canadian Oxford Dictionary |publisher=Oxford University Press |isbn=9780195418163 |url=https://www.oxfordreference.com/view/10.1093/acref/9780195418163.001.0001/m_en_ca0044552 |chapter=modus operandi|year=2004 |access-date=6 April 2020}}</ref> The word {{lang|la|operandi}} is a [[Latin conjugation#Gerund|gerund]] in the [[genitive case]], "of operating"; gerunds can never be pluralised in Latin, as opposed to [[Latin conjugation#Gerundive|gerundives]]. When a noun with an attribute in the genitive is pluralised, only the head noun normally changes, just as in English with "of": "a fact of life, two facts of life" (unlike, for instance, {{lang|fr|les modes opératoires}} in [[French language|French]]).