The male version of a cougar; an older man who preys on younger women.
"Mr. Smith is such a manther, did you see his new girlfriend? She's got to be less than a quarter of his age. Awesome."

"That Smith geezer was hitting on my granddaughter at the banquet. What a hideous manther."
by helloalice July 27, 2009
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Noun. Origin: the male form of a "cougar", man + panther= manther. An older man who frequents bars, lounges and clubs, never a genuine gentleman, ranging from ten to fifty years older than his victim. Usually carries an unusually fat wallet, wears too much cologne, and dresses younger than his age. May over-frequent the tanning beds and gym, have trendy/dyed facial hair such as a soul patch or goatee, may use the terms "baby", "sugar tits", or other female defamation when trying to pursue his prey. If balding, may never take off his ball cap in order to hide his aging hairline. Manthers always seem to evade the question of their age, previous or current marriages, children, and most things regarding their past (unless it has to do with thier old frat/college football days). Manthers prey on their younger victims in order to gain popularity amongst their fellow mathers, as well as for a sexual high. Some manthers are extremely good looking, stylish and somewhat gentlemanly. Others are old, drunk dirt balls with a lot of money and a feeling of self-entitlement.
1. Damn Shelley, why do all the mathers have to whip out their wallets and expect me to go to bed with them?

2. Oooh! Look at that manther over there! Maybe I can get him to buy us some drinks; I need a sugar daddy.
by USS Lady Red September 1, 2007
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A male cougar. Single, usually divorced, and at a minimum 10 years older than a cougar.
He did not care if the youth laughed at his ragtop corvette that even at this age he could not afford, for he was manther.
by Wes Tent April 29, 2004
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Male version of a female cougar; male mostly older than the female prospect he is hunting. Prey is mostly hunted at work and the weaker females with lower self esteem are the likely victims. Victims are then taken back to his den and usually asked to wear his Russian war helmet or another skeet trap.
Damn I cant believe what a manther Dan is, if he gets this one it would be number for the week.
by de-evolution August 25, 2009
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An older homosexual male, who seeks out younger me to prey upon at bars, clubs and work. Similar to the cougar, but homosexual.
The manther likes them young mens's...
by TFF'er August 12, 2011
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Adam living in Toronto, Canada and working as an Investment Banking is half Man, half Panther. This is proven by studies completed on Adam by scientists at the University of Toronto.

Adam is a wealthy, young, and handsome man with the brightest of futures with a very dark past. From Africa’s deepest recesses, to the rarest peaks of Tibet, heir to his father’s legacy, and the world’s darkest mysteries is Adam, master of the secrets that divide man from panther, panther from man, Manther.
by Wild Tiger April 27, 2007
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