half-your-age-plus-seven 

A clarification: the formula mentioned to determine WHEN an inappropriate relationship becomes appropriate is incorrect. The correct formula is to double the difference between the appropriate age of the younger person and the younger person's actual age. Conversely, this will equal the difference between the appropriate age of the older person and the older person's actual age. A SIMPLER FORMULA: The older person's age plus 14 minus twice the younger person.

Tim is 46; his girlfriend is 27. He shouldn't date under 30 according to the half-your-age-plus-seven rule; she shouldn't date anyone over 40. The relationship becomes appropriate in six years: 2 x (30-27) or 46-40, OR 46 + 14 - (2 x 27).

half-your-age-plus-seven by TashTish December 26, 2014

half-your-age-plus-seven 

There's 1300 reviews on this phrase, and no one has managed to figure out the reverse of this rule? Surely my town wasn't the brightest of the lot?

If you're 40, 27 and younger is skezy, as 40/2+7 = 27.
If you're 40, 53 and older is skezy, as 40*3/2-7 = 53.

No one here seems to know how to write a formula. Half-your-age-plus-seven

half-your-age-plus-seven by ep1032 October 18, 2010

half-your-age-plus-seven rule 

A convenient rule to define the youngest that a romantic interest can be before the relationship is indecent. Widely referred to and used, the rule has merit for usefulness. The full version states: "if you halve your years then add seven, you'll have the youngest decent age for a partner; if you double your years then subtract seven, you'll have the oldest decent age for a partner".
However it's somewhat flawed thanks to the poor mathematical ability of its authors -- it gives a different result depending on whether it is worked out for a younger or older partner.

26-year-old Barbara waited patiently until Jack turned 20, fulfilling the half-your-age-plus-seven rule, before pursuing him romantically.

half-your-age-plus-seven rule by kriswa August 3, 2007

Half your age plus seven rule. 

A mathematical equation used to find the youngest age a person can date without being considered a disgusting, cradle robbing freak. (A/2)-7=Y, where A is your age and Y is the youngest you should date.

Conversely the rule can be inverted to find the oldest age a person should date. 2(A-7)=O, where A is your age and O is the oldest you should date.

John is 26 and dating a 20 year old named Kate, (26/2)+7=20. Their relationship satisfies the half your age plus 7 rule.

Kate is 20 and dating a 26 year old named John. 2(20-7)=26. This relationships satisfies the inverse of the half your age plus seven rule.

Half your age plus seven rule. by Trojan91 July 21, 2012

your-age-plus-half-your-age-minus-seven

how someone can decide how old he/she can go before dating someone who is older

Before I date any man who is older than me, I do the your-age-plus-half-your-age-minus-seven math problem to make sure he is not too old for me.

your-age-plus-half-your-age-minus-seven by kimmickal September 13, 2009