Q: I hear “mix and match” where merely “mix” is meant, as in a Bloomberg article about Covid-19 that quotes a doctor as saying “there is evidence that mixing and matching different vaccines may actually boost the immune response.” How long has “mix” been needlessly expanded? I’m ready to hear you say this has been going on for approximately 1,000 years. Well, at least 300.
A: No, not quite 1,000 years. Nor even 300. “Mix and match” apparently showed up about 60 years ago.
We agree that “mix and match” can often be replaced by “mix” alone, but the full expression suggests something more than merely mixing, especially when it’s used as retailese to promote things like a summer wardrobe, a sound system, or a cable TV package.
Standard dictionaries generally define the verb phrase “mix and match” as to combine different but complementary things—compatible items that complete or improve one another. So you can “mix” two clashing pieces of clothing, but “mix and match” only compatible ones.
The doctor quoted by Bloomberg seems to be using the expression in the dictionary sense. She uses it to mean combining compatible Covid vaccinations to improve their effectiveness.
It seems odd that a doctor would use a retailing expression to promote a Covid treatment, but people fighting the pandemic, and the news media covering them, have apparently adopted this usage. Here are some recent headlines:
“ ‘Mix and match’ UK Covid vaccine trial expanded” (BBC News, April 14, 2021).
“Can you mix and match Covid vaccines? Here’s what we know so far” (CNBC, April 9, 2021).
“Can We Mix and Match COVID-19 Vaccines? Experts Say Not Yet” (Healthline, March 27, 2021).
“Getting One Vaccine Is Good. How About Mix-and-Match?” (The New York Times, March 30, 2021).
“Scientists get serious about mixing and matching COVID-19 vaccines” (Medical Press, March 1, 2021).
As for the etymology, the expression emerged in the 1960s as both a verb and an adjective, according to citations in the Oxford English Dictionary, though similar phrases in the 1940s and ’50s anticipated the usage.
The OED, an etymological dictionary, says the verb phrase means “to select and combine different but complementary items (originally of clothing) to form a coordinated set.” It has a similar definition for the adjective.
The dictionary cites this forerunner of the verb: “Tropical separates … Of crisp tropical rayon suiting nicely tailored … You can either ‘mix ’em or match ’em’ ” (from an ad in The Baltimore Sun, April 3, 1948).
And here’s a precursor of the adjective: “Mix-match styles, casual jackets and skirts which match or contrast, but are sold separately” (The Fashion Dictionary, 1957, by Mary Brooks Picken).
Interestingly, the first Oxford example for the actual verb phrase refers to mixing and matching laboratory glassware, not clothing. It comes from an ad that we’ve found in an earlier publication and expanded here: “Mix and match! Order anything in the complete Kimble line … mix Kimax rod, tubing and pipe with lime glass or Kimax volumetric ware” (Analytical Chemistry, Jan. 1, 1960).
The earliest OED citation for the adjective, which we’ve also expanded, is from an article about various terms for leotards and tights: “The leotard look in tights also appeared under the names of color-cued tights, Glamour Gams, streamlined stretch tights, full-fashioned tights, casual tights, Gotham-tites, mix-n-match Tights” (“Leotards and ‘Tightsomania,’ ” by Kelsie B. Harder, American Speech, May 1960).
From what we’ve seen, the phrase “mix and match” usually appears in the sense of combining and complementing things, not just combining them. And the items combined are compatible, not clashing. However, we don’t find the expression used much in general writing or conversation.