scheme
sly
sneaky, sly, silent, undetectable,
prank
The word trick is already a noun. Another example is the word trickster.
gag
he was a sneaky jackrabbit.
Sneaky (acting in an underhand way, deceptive) is "sournois - sournoise" in French.
how can you use the word sneaky in a sentence
Ruse
Halloween.
The word "sneaky" does not have a suffix. A suffix is an affix that is added to the end of a word to create a new word or alter the meaning of the original word. In this case, "sneaky" is a standalone adjective without any additional suffixes attached to it.
Another word for "trick" in the phrase "trick or treat" is "prank." The phrase traditionally represents the choice between performing a playful prank or receiving a treat, usually during Halloween. The concept emphasizes the playful, mischievous spirit of the holiday.