Skip to main content
Sillster is a noun used to describe someone who acts in a goofy manner, usually with the word silly placed as an adjective before it.

It can also be used in a derogatory way to mock someone for being ignorant.
Girl: Would you like to be my boyfriend, and take me out on dates, and tell me how much you love me?

Boy(laughing): Stop being a silly sillster, and take your shirt off!
Sillster by Nilbog_gobliN October 24, 2012
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

sillstrop 

a female whom men generally go crazy over, or pursue past the point of sanity
man 1: i want to buy a drink for that chick at the bar
man 2: good luck dude she's a sillstrop, buy three.
sillstrop by DRuel August 29, 2009
Related Words

Sillister 

Noun. One who is being extremely silly.
Why did you pull your pants down? You're a sillister.

Smillster 

Smillster is when a girl called Smilla takes her drugs and become the one and only Smillster. Smillster usually runs around crazy and sometimes start singing the My Little pony theme song. If u see a wild Smillster, run away as fast as you can.
Oh no, Smilla turned Smillster.
LETS RUN
Smillster by Långis December 15, 2016

Silkster 

(aka) Silky

Wonderful, caring, charasmatic, loving, beautiful stong woman who lights the world up by just being there. A great friend to have.
Love you, Silkster! Mwah!!! 300sixty is greeeeat!
Silkster by Amanda the Miracle Hun November 22, 2004
sister-in-law; this is a way to refer to your SIL without having to call her 'sister'.

While in written communications one can use 'SIL', in spoken communication using the term 'silster' is both more descriptive and specific than saying 'sister-in-law'. And it's more concise as well, offering a savings of 50% (two syllables instead of four for 'sister-in-law'!

'Silster' is a useful term for those having trouble accepting the wife of their brother or the female sibling of their husband. It has a certain mouth-feel which reveals this reluctance and difficulty.
Somehow I survived a long weekend with my silster at the parents' place.
silster by skwerlgirl August 20, 2009
More from Urban Dictionary
A dead drop is a location used to secretly pass items between two people, without requiring them to meet.

Spies have been known to use dead drops, using various techniques to hide the items and to signal that the drop has been made. Drug dealers use this as well.

A common place is to duct tape the item to the underside of a toilet cover in a public restroom.

A signal is sometimes used as well to indicate there is something to pickup, like a pile of stones in a certain formation. After checking the drop the signal is removed.
"The dead drop is the restroom toilet at the Gulf station at the corner of Commercial Ave. and Georges Rd."
dead drop by rubberroom July 23, 2008
Word of the Day on November 9, 2026

No Surprises Wedding

A "No Surprises Wedding," or NSW, is a wedding invitation designation that tells attendees that there can be no unplanned announcements, engagements, events or speeches at the wedding - all actions must be pre-approved by the couple. Anyone who performs an unapproved "surprise" will be asked to leave the wedding early.

This designation comes from Reddit, where so many stories of bad wedding behavior indicated a need to communicate expectations for the wedding behavior of attendees.
You are cordially invited to the nuptials of Brian and Tom on October 31 at noon.

Please note that this wedding is child-free (under 10) and a No Surprises Wedding (NSW). Reach out to wedding planner Sami Smith to request approvals or exceptions; please note that exceptions will be rare. Limited child care for under-10s will be available. All approvals will be noted and included in planning. Unapproved, or surprise exceptions, will result in guests being asked to leave.
Word of the Day on November 8, 2026
Ulzzang true definition is "best & "face" = best face in korean. They are basically people with above average looks, sometimes with the use of photoshop and haduri who post their pics online, some becoming internet celebrities.
"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"
ulzzang by `r i k kit t y February 26, 2008
Word of the Day on November 7, 2026
EBK stands for "Elite Ball Knowledge." 1 In internet slang, "ball knowledge" originally referred to a deep understanding of football/soccer or basketball, but it has evolved into a broader term for having a highly sophisticated, deep, or niche understanding of any specific topic (such as music, movies, or subcultures).
Person A: "That scene was a direct homage to an unreleased 1982 Japanese indie film."
Person B: "Wow, EBK."
EBK by silwhett November 5, 2026
Word of the Day on November 6, 2026
A seemingly endless debate with a idiot
I don't know man im not ready for yap trap stupidity today which always tries to suck you into it
Yap Trap by WolfieSnack November 4, 2026
Word of the Day on November 5, 2026
Texas is categorized as a swing state in presidential elections, but has voted for Republicans more times than for Democrats in recent history. As such, as demographics change political alignments, some Democrats believe that Texas will vote blue, or Democratic, due to their Hispanic and African American voters, who often align themselves with the Democratic Party's liberal wing.

Blexas has been cited as possible in the upcoming decades, but only if Democrats continue to win the Hispanic vote in bigger margins.
Democrat 1: What is your prediction for the 2024 presidential election?
Democrat 2: Well uh, Blexas!
Democrat 1: You've been saying that since 2008 though.
Blexas by Tritonist June 14, 2021
Word of the Day on November 4, 2026
Load more