guts

gut

1. noun, informal A belly or paunch. Wow, do you see the gut on that guy? It's huge! I've been feeling really self-conscious about my gut lately, so I'm going to start going to the gym again.
2. noun, slang A basic, innermost response or intuition. A: "I'm just not sure which is the right thing to do." B: "Trust your gut." My gut was telling me that something was wrong with the situation.
3. adjective, slang Very easy; not demanding or challenging at all. Said of academic courses. I padded out the semester with a few gut classes so I could take on some extra shifts at the restaurant. I thought Physics 101 would be a real challenge, but it turned out to be a bit of a gut course.
4. adjective, slang Of or involving a basic, innermost response or intuition. While good résumés always help, I usually end up hiring people if I have a good gut feeling about them. Your gut decisions are more often than not the best ones.

guts

1. The stomach and/or intestines. If everything you eat makes you nauseous, there must be something going on with your guts.
2. The innards of something. First, we need to clean the guts out of the pumpkin, then we can carve it.
3. The internal components of something, usually something mechanical. We'll have to take the computer apart if there's a problem with its guts.
4. Courage, conviction, or resolve. Wow, you've got a lot of guts if mountain climbing is your hobby! I don't have the guts to ask my crush to the prom. You're always talking about quitting your job, but I don't think you have the guts to do it.
See also: gut
Farlex Dictionary of Idioms.

guts

(gəts)
1. n. courage; bravado. It takes guts to do something like that.
2. n. the belly; the intestines. I’ve got some kind of pain in the guts.
3. n. the inner workings of anything. There’s something wrong in the guts of this clock.
4. n. the essence of something. Let’s discuss the real guts of this issue.
See also: gut
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • gut
  • my gut tells me
  • labonza
  • bust (one's) gut
  • beer gut
  • gut-busting
  • put (some time) in on (something)
  • put an amount of time in on
  • put in (some time) on (something)
  • gutted
References in periodicals archive
'This is one of the largest ever studies to explore the effects of red wine in the guts of nearly 3,000 people in three different countries and provides insights that the high levels of polyphenols in the grape skin could be responsible for much of the controversial health benefits when used in moderation.'
Red Wine In Moderation May Protect Gut Health
So, she wondered whether it may be the same for the microbial gut inhabitants.
How and why our bodies starve gut bacteria
Previous research also indicates that a person's gut microbiome plays a role in mental health, including one study showing that a bacteria common in (https://www.nature.com/articles/srep33726) probiotics could reduce stress and anxiety.
Electronic Gas Pill Measures Your Farts Before They Happen
A large body of evidence suggests that gut microbiota and SCFAs exhibit positive effects on glucose-lowering agents in T2DM.
The Relationship between Frequently Used Glucose-Lowering Agents and Gut Microbiota in Type 2 Diabetes Mellitus
But the new work pushes that effort further because it shows how stem cells, when mixed with immune and connective tissue cells, can grow into normal gut tissue around the scaffold and function inside a living mammal.
Lab-grown 3D intestine regenerates canine gut lining
Gareau uses specialized breeds of mice, and also mice that have been bred and raised to be germ free, to observe the effect of manipulation of the gut microbiome on behavior.
Animal models, big data boost 'psychobiotics'
Collectively, these microorganisms are referred to as the gut microbiome.
Exploring possible links between the gut, the immune system and MS
These and other hints have led researchers to experiment with fecal transplants to flush out pro-obesity gut microbes and dump in lean-promoting ones.
A gut infection can keep mice lean: bacteria can invade one rodent from another, preventing both from getting fat
Will, because he leads with his head, heart and guts, believes that people need to be understood and numbers need to be controlled.
Developing CFOs as whole leaders
Machine Guts came out of Zeidler's Web project, Bulk Bin, which was produced at The Banff Centre's Big Rock Candy Mountain Residency program.
Beyond the fringe
sakazakii from the guts of larvae of the stable fly, Stomoxys calcitrans, demonstrating an environmental reservoir for E.
Isolation of Enterobacter sakazakii from Midgut of Stomoxys calcitrans
Sleepers Guts is described in the program as "A Piece by the Frankfurt Ballet," and the choreography is credited to ten dancers, as well as to Forsythe.
The continuing evolution of Mr. Forsythe
6 ( ANI ): Germ-free mice, who received gut bacteria from obese humans, gained more weight and accumulated more fat than mice, who received bacteria from the guts of lean humans, according to a new study.
Gut bacteria from lean humans key to fighting obesity
Also found in the guts of termites, these bacteria break down fibers that humans typically can't.
Gut flora reflects children's diets: Africans have more versatile and robust intestinal bacteria