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1.
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
 
2.
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 01, 2007
 
3.
I am entering the world of the Manther so I know what I want.... and I know what it is. At 40 years of age, Good looking, Good Job, Nice car, Impeccable Manners, Financially secure, and grooming is excellent. I am confident in my position to lure unsuspecting younger girls (Mid-Late 20's) away from the groping ill dressed baggy pant uneducated stumbling mass of same aged men.

I represent a different more experienced mature, direct and sophisticated approach to sexual encounters. A new delicacy. A seasoned veteran of the sheets and all things therein found. Very selective and thoughtful in my approach. Any gap in attention by my young rivals will be exploited. I am ever ready to out maneuver my young opponents with distractions, humor, experience, and intimidation.

I seek to separate a girl from the herd and get her to believe it is a Magical unforgettable encounter soon to be had in that I will appreciate every inch of her...and not the select parts that only my younger counter parts enjoy for self benefit.

In the end I can go either way in my action...there is always the Cougars that know my ways...and in that we speak the same language....and walk the same walk.....as I am man.....they are always available to me.......
"Ughh I am sick of the frat dudes...Check out that guy over there....He's a Little older but looks great...I think I could get into that Manther for tonight"
by t500titan August 18, 2011
 
4.
a man cougar! like a man panther
Eli Roth is a Manther
by farylreisman March 28, 2010
 
5.
My daughters call me this if I show up with a date they think is too young (no such thing)
The Male counterpart to women called a Cougar is a Manther.
by Charlie & Hef January 04, 2011
 
6.
greying, older, yet sly and attractive older man. awes younger ladies with calm demeanor. time has built endurance and prestige. many ride bicycles to "stay fit" and attract young prey.
"that dude dave is SUCH a manther...all those vegas girls want to see his wienr!"
by goredidit December 01, 2009
 
7.
An older man who chases younger women. Wears open shirts, necklaces, drives Corvettes or any T-Top vechile.
That douche in the Iroc is cruising the cherrleaders, such a manther
by cpooldog September 06, 2011