ality

Ality is a derivational suffix in English used to form abstract nouns that denote a state, condition, or quality of a root. It is written as -ality and is typically attached to adjectives or stems of Latin origin, especially those ending in -al, to yield nouns with a Latinate feel.

The suffix descends from Latin -alis, via French -alité, and has a close kinship with the more general abstract-noun suffix -ity. In many cases, -ality marks the result or nature of the root concept, rather than a concrete object. The boundary between -ality and -ity can be subtle, with many words historically formed to end in -ality or -ality-like spellings.

Common examples include reality (state of being real), formality (state of being formal), duality (state of being twofold), totality (the whole amount), practicality, normality, vitality, rationality, and spirituality. These examples illustrate how -ality often conveys an overarching condition derived from a base adjective or noun.

Phonology and morphology: the suffix is typically pronounced as part of the final syllable, commonly /-əlɪti/ or /-æləti/ depending on the word and stress. Morphologically, -ality is productive when attaching to adjectives or base forms ending in -al or with Latinate origins, though usage varies by word and historical development. Some words that appear to end in -ality may also be analyzed as combinations of -al + -ity in origin.

Usage: ality words are frequent in formal, scholarly, and analytical writing, providing precise terms for attributes, states, and qualitative concepts. See also -ity, -al suffixes, and lists of English suffixes.