impactful

the word 'impactful' is a modern english formation, created by appending the native english adjectival suffix '-ful' to the noun 'impact'. the noun 'impact' itself originates from the latin verb impingere, meaning 'to drive into, dash against', composed of in- (into) and pangere (to fasten, drive in). while the latin root conveyed a strong physical sense of collision, the modern noun 'impact' has broadened to encompass figurative forces and influences. the relatively recent compound 'impactful' (first attested in the 20th century) directly inherits this figurative sense, describing something that is 'full of' such a significant effect or influence.

Structure: impact (noun) + ful (adjective suffix) impact (from latin impactus, past participle of impingere meaning 'to push against'); ful (from old english -ful, an adjective-forming suffix meaning 'full of').