ADJ
decent, friendly, funny, good, great, nice, sweet, wonderful | bad
ordinary, regular
He seems like an ordinary guy, but he's actually a professional magician.
big, little | middle-aged, old, young | black, white | gay | tough | crazy
noun
An effigy of a man burned on a bonfire on the anniversary of the Gunpowder Plot (5th November).
A person of eccentric appearance or dress; a "fright".
“But shan’t I look a guy?” “Not a bit of it. Jist the very kick!”
I am always a perfect guy, whatever I wear, when I sit against a red curtain. You men say that a woman always knows when she’s good-looking, but I am happy to say I know when I look a guy.
A man or boy; a fellow.
“You don't say so? I thought he was some guy from Pennsylvania.”
"Hi, guys. Did you have a fun time at school?" said Katherine. "Yeah we did," said Stacy.
A person (see usage notes).
My “Guys” actually constitute a collection of people that range from my nearest and dearest girlfriends, my immediate and extended family, co-workers and acquaintances that care.
My “guys,” as I call the group, are loving and hilarious, serious and the epitome of love. They are both male and female in their presence and have never had the experience of inhabiting a physical body—they are beings of light.
Anything seen to have character and personality, such as an animal or a toy.
The dog's left foreleg was broken, poor little guy.
I just want to play with my guys. My guys are my friends, they're stuffed animals or little action figures I have a lot of them.
verb
To exhibit an effigy of Guy Fawkes around the 5th November.
To make fun of, to ridicule with wit or innuendo.
The dusky hunters "guyed" the palefaces who could not do as well as they with their primitive weapons, even though the fire spouted from the iron tubes and the balls that could not be seen by the eye carried death farther than did the missiles launched by the natives.
Swift and other satirists mercilessly guyed the unlettered self-importance of the peddlars of such soul-food, exposing their humility and self-laceration as an egregious and obnoxious form of self-advertisement (s'excuser, c'est s'accuser).
To play in a comedic manner.
To guy the speech in the manner of an old-fashioned 'ham' for cheap laughs....
noun
A guide; a leader or conductor.
A support rope or cable used to aid in hoisting or lowering.
A support to secure or steady structures prone to shift their position or be carried away (e.g. the mast of a ship or a suspension bridge).
An inoffensive adult male who desires romantic companionship but who is too bland and uninspiring to be attractive.
1999, The 'Nice Guy' Syndrome, Self-Help Informational Resources, The Counseling Center for Human Development, The University of South Florida https://web.archive.org/web/199910131
Indicates that the speaker is male.
To a reasonable degree; as much as a typical person or man.
I like reading as much as the next guy.
Indicates that the speaker is a trans man.
“But shan’t I look a guy?” “Not a bit of it. Jist the very kick!”
WiktionaryI am always a perfect guy, whatever I wear, when I sit against a red curtain. You men say that a woman always knows when she’s good-looking, but I am happy to say I know when I look a guy.
WiktionaryAnd the lady from the provinces, who dresses like a guy, And who “doesn’t think she dances, but would rather like to try” […].
WiktionaryThe dusky hunters "guyed" the palefaces who could not do as well as they with their primitive weapons, even though the fire spouted from the iron tubes and the balls that could not be seen by the eye
WiktionarySwift and other satirists mercilessly guyed the unlettered self-importance of the peddlars of such soul-food, exposing their humility and self-laceration as an egregious and obnoxious form of self-adv
WiktionaryTerry Kilmartin […], applauded for every ‘um’ and ‘ah’, knew that he was being guyed and had the charm to make it funny.
Wiktionaryi Register
In some senses, guy is marked as dated, obsolete, UK, colloquial, rare. Watch for register when choosing this word.