This is a simple puzzle about English words.

Which English word has the largest number of eɪ sounds in it? The phonetic sound /eɪ/ is the same as the letter "A" or the "ay" in day or the "eigh" in "eight".

To make it more like a competition, if two people get the same number of /eɪ/ sounds, the winner is the one with largest number of different spellings for the sound in the word. If people tie on that then it is longer word. If that is equal too it is the first answer.

If there is a dispute about pronunciation and what is a proper word, I will take whatever the OED says as gospel.

I have already been made to tighten the rules thanks to a clever answer by rand al'thor. No hyphens or spaces are allowed.

Winning word so far

  • mainstaysails
  • $\begingroup$ Are the words allowed to have any other vowel sounds in them (e.g. potato) or only eɪ? $\endgroup$ Commented Oct 15, 2016 at 18:14
  • $\begingroup$ @randal'thor Yes. But you may fall foul of one of the tie-breaking rules. $\endgroup$
    – Simd
    Commented Oct 15, 2016 at 18:15
  • $\begingroup$ Great-great-grandmother isn't in the OED? Great-great-grandfather is mentioned as a valid English word in the online Oxford dictionary. $\endgroup$ Commented Oct 15, 2016 at 18:25
  • $\begingroup$ @randal'thor They are valid words just not according to my definition. I have now just banned hyphens as its much cleaner. Curiously great-great-grandfather is in the OED. $\endgroup$
    – Simd
    Commented Oct 15, 2016 at 18:41

4 Answers 4




This is a word, and the OP has confirmed that it appears in the OED.

There are many examples with two, including:

waylay, Mayday, eighty-eight, maintain, gateway, mainstay, failsafe, gainsay, staysail, straightaway, railway, staysail, ratepayers, ...

If we were allowed to use hyphens, we could use these to construct words with four:

gateway-maintainers, railway-ratepayers, ...

Arbitrarily many (now disallowed)


  • $\begingroup$ @Lembik :-> $\endgroup$ Commented Oct 15, 2016 at 18:16
  • $\begingroup$ Do you mind if I ban this? I mean it's clever but wasn't quite the point. $\endgroup$
    – Simd
    Commented Oct 15, 2016 at 18:17
  • $\begingroup$ Seriously though, I do think this is a valid answer. As far as I know, there's no maximum $n$ such that ($n$ greats)-grandmother is no longer a valid word. $\endgroup$ Commented Oct 15, 2016 at 18:17
  • 3
    $\begingroup$ While technically you can say great-great... any times, after like a few thousands (?) iterations, or so, you will run out of people to point at, as you get closer and closer to Eve (as in Adam and Eve in paradise). $\endgroup$
    – Matsmath
    Commented Oct 15, 2016 at 18:29
  • 1
    $\begingroup$ Mainstaysail(s) is arguably good, but it does require including non-primary pronunciations: the most common pronunciation of mainstaysail(s) (which still isn’t really ‘common’ at all) is /ˈmeɪnsteɪsəl(s)/, with the final diphthong reduced to a schwa, similar to studdingsail /ˈstʌnsəl/ and topsail /ˈtɒpsəl/. I’ve also heard it pronounced /ˈmεnstəl/, but I’m pretty sure that’s a definitely non-standard pronunciation. $\endgroup$ Commented Oct 16, 2016 at 13:38

Heres a few for two:

Payday, breakaway, cableway, fadeaway, gainsay, graymail, haymaker, mayonnaise, playdate

But I think I found the winner:

It is 189'819 letters long, takes 3 hours to pronounce and is the real word for the protein 'titin'. I'm not going to bother counting the 'ay' sounds in it.

It is too long to post here as the limit is 30'000 letters but here is a link to it.

  • $\begingroup$ I already found a whole bunch for two :-) $\endgroup$ Commented Oct 15, 2016 at 18:31
  • $\begingroup$ @randal'thor i'm looking for a 3 but can't find one $\endgroup$ Commented Oct 15, 2016 at 18:32
  • $\begingroup$ I particularly like your ones with different spellings like mayonnaise. $\endgroup$
    – Simd
    Commented Oct 15, 2016 at 18:37
  • 1
    $\begingroup$ Yes, that's the trouble with questions like this: they can often be 'won' by some massively long-arsed word for some chemical thing that almost nobody's ever heard of. $\endgroup$ Commented Oct 15, 2016 at 19:32
  • 5
    $\begingroup$ This word consists entirely of the following units: acetyl, alanyl, arginyl, asparaginyl, aspartyl, cysteinyl, ethionyl, glutaminyl, glutamyl, glycyl, histidyl, isoleucyl, leucyl, lysyl, methionyl, phenyl, prolyl, serxisoleucine, seryl, threonyl, titinmethionyl, tryptophyl, tyrosyl and valyl. None of these contains an /eɪ/ sound, so this word actually scores zero :-) $\endgroup$
    – r3mainer
    Commented Oct 16, 2016 at 9:01

Shortest 2-eɪ words?

nene   neɪ-neɪ
epee   eɪ-peɪ   (not primary pronunciation)

  • $\begingroup$ I like nene as an example. $\endgroup$
    – Simd
    Commented Oct 16, 2016 at 21:02
  • $\begingroup$ Scientists are still searching for a 2-eɪ word with only one vowel. For pure per-letter potency, @Lembik, hard to imagine anything more efficient than your original "a." $\endgroup$
    – humn
    Commented Oct 16, 2016 at 21:07
  • 1
    $\begingroup$ "aye aye" is almost a word as in "Aye, aye, what have we here?" $\endgroup$
    – Simd
    Commented Oct 16, 2016 at 21:10
  • 1
    $\begingroup$ Aye, indeed, and Finnish does have "hei hei" $\endgroup$
    – humn
    Commented Oct 16, 2016 at 21:11

Hm. So I suppose that

Eight million eight hundred and eighty-eight thousand, eight hundred and eighty-eight point eight eight (8,888,888.88)

would not be accepted, huh?

  • $\begingroup$ Maybe add billion and trillion to it $\endgroup$
    – Sid
    Commented Oct 16, 2016 at 14:05
  • $\begingroup$ Seems to have spaces. $\endgroup$
    – Simd
    Commented Oct 16, 2016 at 15:50

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