compatibilis

Compatibilis is a Latin adjective meaning able to be joined, fitting, or compatible. It describes things that can exist together or be used together without contradiction, such as plans, systems, or properties that are mutually agreeable or non-conflicting.

Form and declension: Compatibilis belongs to the -ilis class of Latin adjectives. It is declined in the standard three-declension pattern, with common forms including compatibilis (nominative singular masculine and feminine), compatibile (nominative/accusative neuter singular), compatibilis (genitive singular), compatibili (dative singular and all plural forms), and compatibilem (accusative singular). Plural forms include compatibiles (nominative/accusative), compatibilibus (dative/Ablative), and compatibilium (genitive).

Usage: In classical and medieval Latin, compatibilis can modify nouns to express suitability or coherence between elements, for example res compatibilis (“a compatible thing”) or ratio compatibilis (“a plan that fits with others”). As a grammatical adjective, it agrees in gender, number, and case with the noun it modifies.

Legacy and related terms: The noun compatibilitas denotes the notion of compatibility, while the adverb compatibiliter means “in a compatible manner.” The root compatibilis has influenced modern vocabulary, contributing to English terms such as compatibility and the philosophical terms compatibilism and compatibilist, which describe the view that free will can be reconciled with determinism.

See also: compatibility, compatibilism, compatibilist, compatibilitas.