prohibitively

The word "prohibitively" is built upon the Latin verb prohibere, meaning "to hold back" or "to prevent," which itself derives from pro- ("forth") and habere ("to hold"). This literal sense of holding something forth to block it evolved into the general meaning of "to forbid by authority." The suffix -ive was added to form the adjective "prohibitive," describing something that has the nature of forbidding or preventing, often due to extreme difficulty or cost. Finally, the adverbial suffix -ly transforms it into "prohibitively," specifying the manner in which an action is done—so extremely that it effectively prevents an outcome, most commonly in an economic context.

Structure: prohibit (forbid) + ive (adjective suffix) + ly (adverb suffix) • prohibit: From Latin prohibere (to hold back, prevent), combining pro- (forward, forth) and habere (to hold). Functions as the core verb root. • ive: A suffix of Latin origin (-ivus) used to form adjectives meaning "tending to" or "having the nature of." • ly: An Old English suffix (-lice) used to form adverbs from adjectives, meaning "in a specified manner."