# What is a Flipped Word™?

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.

Here is a CSV version.

Flipped Words™,Not Flipped Words™
boosts,speed
dumps,drop
mound,hill
blowup,explode
unbolt,tighten
downtown,city
bomb,dynamite
box,crate
quod,court
slump,streak

• ...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.
– anon
Commented Jan 24, 2017 at 22:25
• @QPaysTaxes Alrighty then. I'll fix that
– Nik
Commented Jan 24, 2017 at 22:26

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

• I guess I made it too easy... Lol. I'll give you the check once I can
– Nik
Commented Jan 24, 2017 at 14:26
• What is meant by "flipped"? t -> f is reflection over a horizontal axis, but s -> s is not; it's rotation. Commented Jan 24, 2017 at 18:40
• I should've guessed by the hint "flipped word"... And here I was about to write a python brute force solver script. Commented Jan 24, 2017 at 19:07
• @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
– Nik
Commented Jan 24, 2017 at 19:31