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insiddyous 

Describes da "subtle 'n' sneaky" ways dat Tom Sawyer's supposedly-goody-two-shoes half-brother actually possesses, but displays only when Aunt Polly's back is turned.
Tom's whiny younger brother may indeed act all "prim 'n' proper" when observing adults are present, but his insiddyous actions are a major aggravation to Tom.
insiddyous by QuacksO March 21, 2023
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insidious 

Insidious (adverb insidiously)

developing in a very gradual, in a stealthy manner, with the intend of causing damage.

Prostate Cancer is an insidious disease.
insidious by piece September 18, 2006

Insidious 

Just watched Insidious it was shit scary
Insidious by xizzie3 October 27, 2011

Insiduous 

A leafless tree that looks threatening and possibly harmful. Typically in a dark forest.
"Holy shit! Those insiduous trees are grabbin' Snow White! Run, Bitch, Run!"
Insiduous by Trrumoi February 19, 2018

Insidious Puzzlement 

1. A seemingly impossible to solve problem that no one seems to know the answer to

Bob: Man, this test is hard.

Dan: Yeah, I know. It's insidious puzzlement.

2. A level or puzzle in a videogame that is extremely frustrating.

Josh: I can't figure out how to escape this room! This level is insidous puzzlement!
Definition 1.
Bob: Man, this test is hard.

Dan: Yeah, I know. It's insidious puzzlement.

Definition 2.
Josh: I can't figure out how to escape this room! This level is insidous puzzlement!

Insidious 

The Devil's coochie/vagina. Can also be used as an adjective to describe the temperature of the surrounding climate.
It is insidious in my room.
Insidious by SexyTexasPete August 31, 2011

Insiduous 

All this foreplay is making me Insiduous.
More from Urban Dictionary

You met me at a very Chinese time in my life

A moment in time where you feel distinctly Chinese over all other things.
Dante: "I wish I could be Nigerian, but I can't because I'm Chinese. You met me at a very Chinese time in my life."
Word of the Day on September 25, 2026
Adjective. Used to describe persons who have adjusted or altered their lifestyle for environmental reasons. Crunchy persons tend to be politically strongly left-leaning and may be additionally but not exclusively categorized as vegetarians, vegans, eco-tarians, conservationists, environmentalists, neo-hippies, tree huggers, nature enthusiasts, etc.

Also used to describe establishments where alternative foods and products are sold, i.e. natural food stores.

Modified derivative of granola.
"I need more crunchy guys in my life. I'm so tired of dating preppy metrosexual assholes."

"I'm heading out to the crunchy store to pick up some fair trade chocolate and tea tree oil, do you need anything?"
crunchy by EBC July 11, 2007
Word of the Day on September 24, 2026
A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.
Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.
Galantir by Ge-sus September 22, 2026
Word of the Day on September 23, 2026

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
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