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In grammar, the instrumental-comitative case combines the instrumental case and the comitative case at the same time, functioning similar to the English preposition "with". It may indicate the means of the action (for example, "with a knife", "using a fork", "by tram") and the person in whose company the action is carried out (for example, "with his family"), as well as other meanings such as the temporal or the modal.

The instrumental-comitative case exists in the Hungarian, Selkup, and Ubykh languages.

Cases

Morphosyntactic alignment	Absolutive Accusative Direct Ergative Intransitive Nominative Oblique Partitive Pegative
Location, time, direction	Ablative Adessive Allative Antessive Apudessive Approximative Delative Distributive -temporal Egressive Elative Illative Inelative Inessive Intrative Lative Limitative Locative -qualitative Medial Perlative Pertingent Postdirective Postelative Postessive Prolative Subdirective Subelative Subessive Sublative Superdirective Superelative Superessive Superlative Temporal Terminative
Possession, companion, instrument	Abessive Caritive Comitative Dative Genitive Instrumental -comitative Ornative Possessed Possessive Privative Sociative
State, manner	Adverbial Comparative Equative Essive -formal -modal Exessive Formal Instructive Modal Multiplicative Orientative Revertive Semblative Translative
Cause, purpose	Aversive Benefactive Causal -final Final
Other	Postpositional/Prepositional Vocative

Declensions