VI. Hyphenation
These prefixes do not require the use of a connecting hyphen in compound terms: ante, intra, semi, anti, micro, sub, bi, mid, super, co, non, supra, contra, over, trans, counter, pre, tri, de, post, ultra, extra, pro, un, infra, pseudo, under, inter, re, weight
Examples - antecubital not ante-cubitalAlso Correct - antithesis, bitemporal, counterproductive, defibrillated, extrapyramidal, infraumbilical, interpersonal, intracranial, microhematuria, midline, nontender, nondistended, nonfocal, nonspecific, noncontributory, noncompliance, nonicteric, nonsmall, overestimate, overweight, preoperative, postoperative, posttraumatic, pseudogout, semicircular, sublingual, superimposed, supramammary, transvaginal, ultraviolet, underweight, weightbearing.
Do use a hyphen with prefixes ending in a or i and a base word beginning with the same letter. Example - anti-inflammatory.
Do use a hyphen when compounded with the prefix self.
Example - self-administered, self-monitored.
For Clarification - Use a hyphen after a prefix if not using a hyphen would change the meaning of the word. Examples - re-cover (to cover again) versus recover (regain)
Post is in that list above so I make it part of the word in most cases unless it is a stand-alone word.
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