knowledgable

The word 'knowledgable' is a modern formation built upon the much older English noun 'knowledge'. The noun 'knowledge' itself evolved from the Old English compound cnāwlǣc, which originally meant 'acknowledgment' or 'confession', literally 'the practice (-lǣc) of knowing (cnāwan)'. The suffix '-able', of Latin origin via French, was productively attached to nouns in later English to create adjectives meaning 'possessing the qualities of' the noun. Therefore, 'knowledgable' logically means 'possessing the qualities of knowledge' or 'capable of demonstrating knowledge'. It is a prime example of English's hybrid nature, combining a Germanic base with a Romance suffix to create a transparent descriptive term.

Structure: knowledge (information/understanding) + able (capable of) - knowledge: From Middle English knowleche, from Old English cnāwlǣc (acknowledgment, confession). The root is the verb 'know' (Old English cnāwan) combined with the suffix -lǣc (denoting action or practice). - able: From Old French -able, from Latin -ābilis, an adjective-forming suffix meaning 'capable of, fit for, tending to'.