These words all have an unusual property in common, what is it?

- Adopt
- Glory
- Knot
- Empty
- Hint
- Begin

Puzzles involving patterns, sequences, or set theory

These words all have an unusual property in common, what is it?

- Adopt
- Glory
- Knot
- Empty
- Hint
- Begin

What is a special property or feature that all of the following words have in common?

banana, uneven, grammar, voodoo, assess, potato, revive, dresser

What number belongs in the “?” circle? Note that all numbers shown are correct, there are no typos or errors.

Nob’s Number Puzzle is a well-known brainteaser by the Japanese puzzle guru Nobuyuki “Nob” Yoshigahara. This cheeky number sequence puzzle seems straightforward, but the straightforward solution falls apart when you arrive at the bottom.

Find the next two terms in this sequence:

10, 11, 12, 13, 14, 15, 16, 17, 21, 23, 30, 33, ?, ?

Replace the ?’s in each of these to complete the puzzle:

“Asia” is H

“Cuffs” is S

“Ender” is I

“Redness” is F

“Fuchsia” is ?

“Using” is E

“Desist” is I

“Visits” is E

“Design” is ?

“Gross” is W or R

“Assign” is S

“Amassing” is E

“Design” is S

“Amassing” is S

“Arrows” is ? or ?

“Pro-tem” and “row” are H

“Ties” is K

“Cohesion” is A

“Casino” is E

“Hocks” is either a word, name, ? or ?

“Edna” is I

“Slang” is X

“Siege” is E

“Basin” is X

“Sin” is X

“Sin” is A

“Besiege” is X

“Signals” is ? and ?

Source: Matt Malone on Puzzling StackExchange (spoiler warning: contains the solution)