stiffy

stiffy — noun

  • stiffysingular
  • stiffiesplural

1. an offensive, very informal word for a man's stiff and enlarged penis, usually c

1.nounC2
Definition

an offensive, very informal word for a man's stiff and enlarged penis, usually caused by sexual desire

Example

Tom laughed at the stiffy he woke up with and headed to the shower.

collocation: wake up with a stiffy

Jake got a stiffy while slow dancing with his crush at the school party.

collocation: get a stiffy

Common collocations
  • get a stiffy
  • have a stiffy
  • morning stiffy
  • hide a stiffy
  • wake up with a stiffy
Synonyms
  • erection

    the neutral, clinical term; appropriate in all formal, medical, and polite contexts

  • hard-on

    equally vulgar slang; common in casual speech among friends

  • boner

    slightly less common slang; often used humorously or by younger speakers

Antonyms
  • flaccid

    clinical term describing the penis when it is not erect; opposite state, not a direct antonym of the noun

Grammar Patterns

get/have a stiffy

Usage Note

This word is considered crude and offensive. It should not be used in polite or formal situations. The clinical term 'erection' is appropriate in medical or formal contexts while 'stiffy' is restricted to very casual, often joking, conversation among close friends.

Common Mistakes

The doctor asked if I had a stiffy in the morning.
The doctor asked if I had an erection in the morning.
'stiffy' is too vulgar for clinical or medical settings.
He felt a stiffy while giving his presentation at work.
He became visibly embarrassed during his presentation at work.
'stiffy' is too crude for workplace contexts; use a euphemism or avoid mentioning it directly.

Word family

Synonym discussion

Sense: noun/1

All four words refer to the same physiological state, but they differ sharply in register and social acceptability. 'Erection' is the neutral, clinical term — the only choice for doctors, textbooks, formal writing, or polite conversation. 'Hard-on' and 'boner' are both vulgar slang at roughly the same level as 'stiffy', though 'boner' often carries a humorous or youthful tone. 'Woody' is milder, almost playful slang, occasionally heard in casual American speech but less common overall. A speaker might say 'I had a stiffy' to close friends as a joke, but would say 'I have an erection' to a doctor or write 'penile tumescence' in a medical report. Using any of the slang terms in formal settings would cause embarrassment or offense.

erection ↗hard-on ↗boner ↗woody ↗

Etymology

Old EnglishEnglish

Formed in the mid-20th century from the adjective 'stiff' (meaning rigid or firm) combined with the slang suffix '-y', which turns adjectives into informal nouns. The word originally appeared in American English slang as a crude reference to an erect penis.