This is in the spirit of the What is a Word/Phrase™ series inaugurated by JLee with his original Phrase™ and Word™ puzzles.

If a word conforms to a special rule, I call it a Flipped Word™.

Use the following examples below to uncover the rule.

Flipped Words™

Here is a CSV version.

Flipped Words™,Not Flipped Words™
  • $\begingroup$ ...That's not CSV, unless the words on the left have a single leading space and the ones on the right have two or three. See CSV. $\endgroup$
    – anon
    Commented Jan 24, 2017 at 22:25
  • $\begingroup$ @QPaysTaxes Alrighty then. I'll fix that $\endgroup$
    – Nik
    Commented Jan 24, 2017 at 22:26

1 Answer 1


I guess

Flipped words are words in which all letters can be flipped upside down to form another letter.
boosts -> poosfs
dumps -> qnwbs
mound -> wonuq
blowup -> plomnb
unbolt -> wnupolf
downtown -> qomufomu
bomb -> powp
box -> pox
quod -> dnoq
slump -> slnwb

Not Flipped words

contain at least one letter that cannot be flipped, e.g. i, e or r

  • $\begingroup$ I guess I made it too easy... Lol. I'll give you the check once I can $\endgroup$
    – Nik
    Commented Jan 24, 2017 at 14:26
  • 5
    $\begingroup$ What is meant by "flipped"? t -> f is reflection over a horizontal axis, but s -> s is not; it's rotation. $\endgroup$
    – LarsH
    Commented Jan 24, 2017 at 18:40
  • 2
    $\begingroup$ I should've guessed by the hint "flipped word"... And here I was about to write a python brute force solver script. $\endgroup$ Commented Jan 24, 2017 at 19:07
  • $\begingroup$ @LarsH The t was just meant to be a sort of deformed t when flipped, but there's a little curve at the bottom which worked well with f. I realized after I had written and posted the puzzle so I left it. Good eye with the s though. I didn't even stop to think about that one! In hindsight, this wasn't a too good puzzle, but I'm working on a tougher one now $\endgroup$
    – Nik
    Commented Jan 24, 2017 at 19:31

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