n. 1
A group of people gathered together, especially temporarily, for a specific purpose such as travel or sport. A social gathering, usually of invited guests, which typically involves eating, drinking, and entertainment and often held to celebrate a particular occasion.
I'm throwing a huge party for my 21st birthday.
n. 2
A person or group of people constituting one side in a legal proceeding, such as in a legal action or a contract.
The contract requires that the party of the first part pay the fee.
n. 3
A person; an individual.
n. 4
A person; an individual. With to: someone who takes part in an action or affair; an accessory.
I can't possibly be (a) party to that kind of reckless behaviour.

Related words

Word family: party-cut partier partygoer part partisan
Phrases: party pooper dadchelor party party bike sausage party party horn bachelor party necktie party stag party
Is a kind of: celebration

Forms

Use in printed books, per decade from 1850 to 2019.

2 letters: do¹
3 letters: one¹, man¹, set¹
4 letters: part¹, side¹, body², band¹, ring¹, crew¹, gang¹, bash¹, gala², rave¹, sect¹
5 letters: squad¹, salon², troop¹, cabal², levee²
6 letters: person², league¹, fiesta³, clique¹, sharer²
7 letters: company³, faction², blowout², matinee³, coterie³, shindig², debauch
8 letters: somebody³, assembly³, alliance³, litigant³, partaker
9 letters: reception³, gathering³
10 letters: individual⁵, detachment³
11 letters: combination⁴, participant⁴, confederacy⁵
12 letters: participator

The small number after each word is its number of syllables (body² = 2 syllables).