- The Fear Mythos: The Choir alters audio, often leading to a literal example of poor communication killing.
- A literal example in Survival of the Fittest Simon Wood mistakes Darnell Butler for a player of the game (not altogether unreasonable, as he is holding a bloodied sword) and attacks, obstentatiously to buy his girlfriend time to escape. Before Darnell can get the chance to explain, he has accidentally killed Simon.
- Played for laughs in Dr. Horrible's Sing-Along Blog. When Dr. Horrible tries to warn Captain Hammer about the broken Death Ray, he interrupts, saying "I have no time for your warnings, Dr. Horrible". Then proceeds to toss off a one-liner before firing. It Doesnt End Well
- The whole musical is based around a more tragic instance, though. If Billy had just worked up the courage to tell Penny how he felt at the start, he may never have built the Death Ray, leading to her tragic death.
- Justified in Atop the Fourth Wall, where much mutual suffering is caused to both Linkara and Jaeris because the latter wouldn't just ask for help, instead taking what he needed by force. However, he had tried to ask for help in the past... and it failed miserably (and lethally, for the people trying to help).
- In Chapter 19.2 of Worm, Skitter explicitly recalls and sets out to defy this trope when talking to Weld and Miss Militia about Calvert:Skitter:Id always hated those parts in the TV shows and movies, where everything could be resolved with the simple truth. It was why Id never been able to watch romantic comedies. It grated: the sitcom-esque comedic situations which would be resolved if people would only sit down, explain, and listen to one another, the tragedies which could have been prevented with a few simple words. I didnt want to be one of those tragedies.
- Noob has a couple of blatant cases.
- In the first situation, the guild finds out that Gaea somehow got Fantöm to help her level up. Later on, they get confronted by Fantöm's teammates, two of which are his guild leader and the guild's recruiter. Omega Zell, who dreams of being the next Fantöm, somehow interprets the leader's "We're looking for a member of your guild. It's about Fantöm" as "We're looking for an understudy for Fantöm and we completely forgot about the bad impression Omega Zell gave our recruiter last Season". Omega Zell says he's the person they're looking for and it's only in the middle of strangling him that Fantöm's leader says "Actually, we're looking for the person who has been blackmailing Fantöm". After Omega Zell's Manchild guildmate asked what the strangling was about.
- In the second situation, Gaea doesn't pay much attention to her place getting broken into but nothing being stolen because she thought that her impulsive and extremely strong roomate had simply forgotten her keys.
- In Manipulation Game Of Fun after Aspiration send a pm to Checklad on day 3 asking whom he considered an enemy or ally, Checklad immediately went ahead to try and kill him. Why? The pm was so poorly worded that it was seen as a threat to Checklad, it let to Aspiration's dead on day 4.
- In Ten Little Roosters, at least three members could have been spared deaths if they had spoken up:
- In episode 3, Chris confronts Burnie and tells him he ran into the killer. Instead of answering Burnie's response ("You saw the killer?! Who is it?!"), he starts describing it more like a The Lord of the Rings-style thing, leading to Burnie's annoyed "The Reason You Suck" Speech , Chris' Heroic Sacrifice-slash-Stupid Sacrifice and Burnie's Ironic Death the following episode.
- In episode 9, Adam, who is hiding in the mocap room, spots Miles rummaging through Monty Oum's workstation and inches his way to the window and whispers "Miles? Is that you?" instead of speaking louder. Because of this, Miles has no idea the killer is strangling Adam and mistakes a video file of it for "dot sex".
- Starship Exeter episode The Tressaurian Intersection. During the final battle, damage enables the captive Tressaurian (a Gorn-like lizard) to escape the brig's Force-Field Door. Its subsequent actions jeopardize the mission and actually cause the deaths of several crewmembers including one we'd come to know. Pity nobody thought to tell the Tressaurian that the mission was helping his people..
- Narrowly avoided in the Thrilling Adventure Hour episode "Custard's Last Stand". Vague comments by Ginny West cause everyone present to believe she is going to hard reboot Gork the robot for having unauthorized emotions. A standoff ensues until Ginny reveals she was actually updating Troubleshooter records on Gork's model so another Troubleshooter wouldn't come along and hard reboot later. After everything settles down, Ginny reveals she had assumed Sparks Nevada knew what she was planning. Sparks quickly explains that he did not. The two take it as a sign that they need to get to know each other better.
- Critical Role: More than once Tiberius damages team members with his Fireball spell, which could have been avoided had he communicated better with the DM. Played for laughs when a fan sent him a set of area effect markers so that in the future he would be able to check his spell ranges properly, to make sure no one who's not supposed to is in the way.
- Mirror World: Most of the conflicts that occur within the story happen because none of the four Houses are capable of just sitting down and rationally talking to each other. This leads to lots of accusations and false claims of violence when most of the story's "antagonists" just want to live in peace. Even the supposed Big Bad is nothing more than a deity that was tired of being lonely and wanted to play with its "ants" in its "ant farm," but failed to simply tell anyone this until after thousands perished.
- If the Emperor Had a Text-to-Speech Device: When Kitten is forced to exchange his caretaker post with the Fab Custodes, he leaves just before the Emperor wakes up and asks for explanation. Dorn could've set things straight, but doesn't say a word, the Fab Custodes lie about the true reason, and when Magnus go to ask Kitten about the truth, he tells the heartbroken Custodian that the Emperor doesn't care for him because he (Magnus) is finally done with the Emperor's shit. It was literally two seconds that ruined everything. A later episode reveals that this is a gambit on Emp's part, and Dorn isn't in on it but does see it for what it is.
- The Wizards Of Aus: Jack's troops communicate orders by horn. A single note for each order. The actual order being determined by the pitch of the blown note. This, naturally, leads to a few mishaps.Jack: Does our main system of communication rely on everybody having perfect pitch? Is... is that a thing?
Horatio: Hang on, no. This is the one for the escape. [blows horn]
[a giant boulder comes flying past and hits some soldiers off screen]
Jack: Did you just. Tell. The trebuchet men to fire?
- Parodied in "The Poptart Tragedy," a So Bad, It's Good story (most likely deliberately awful) about a boy and girl. The girl wants some Pop-Tarts, and asks her boyfriend to get them. When he returns, she tells him that she's pregnant and asks if he'll stay with her boyfriend. When he says "no," she cries and runs away—but without eating the Pop-Tarts, her blood sugar lowers and she tumbles to the ground, somehow dying. The boyfriend then reveals that he said he wasn't going to be her boyfriend because he planned on proposing, thus becoming her husband. Listen to the heart-rending tragedy narrated here.
- A similar example occurs in "5ever." A girl asks her boyfriend if he will love her forever; again, he says no, and again, she runs away and dies (this time she's struck by a car). When he finds her corpse, he explains that he didn't plan on loving her forever—he was going to love her fiveever, which is apparently more than "four"ever.
- Aventures has a literal case, since Fred wanted to move along the campaign's plot what was supposed to be his character Théo asking the dying druidess if she has a last request or rites sounds like a death threat which shock the druidess enough to kill her on the spot.
- This is Ozpin's big problem in RWBY. Being the Big Good in a seeming Eternal War with Salem, he knows pretty much all the ups and downs about the things needed and done around the world. However, he has a habit of being "need to know" with the information and not telling people when it's really needed (like, say, before things go pear-shaped). This has lead to many many people, both Hunters/Huntresses and innocents, to die at the hands of the Grimm and Salem's associates and has, rightfully, pissed off Team RWBY and the remains of Team JNPR.
- A major theme of The Cry of Mann. Everybody just talks at each other, only truly holding conversation with the callers, who in turn struggled to keep up with the conversations and often failed to make things better. When Jouglat was killed, it was heavily implied that it could've been avoided, had the callers communicated with him properly.
Poor Communication Kills / Web Original