Pronunciation: [pˈʌnt͡ʃ ɪn mˈa͡ʊθ] (IPA) 
The spelling of the phrase "punch in mouth" follows the usual English orthographic rules. "Punch" is spelled as /pʌntʃ/, with the "u" pronounced as the "u" in "up" and the "ch" pronounced as the "ch" in "church." "In" is spelled as /ɪn/, with the "i" pronounced as the "i" in "sit." "Mouth" is spelled as /maʊθ/, with the "ou" pronounced as the "ow" in "cow." Together, the phrase is pronounced as /pʌntʃ ɪn maʊθ/.
The term "punch in the mouth" refers to a violent physical act wherein a forceful blow is delivered to someone's face or jaw area using a closed fist. This phrase typically denotes a physical altercation or an act of aggression resulting in a direct, forceful impact to the mouth region. The force behind such a punch can cause significant pain, injury, and immediate trauma, often resulting in the breaking of teeth, lacerations to the lips or gums, swelling, or even fractures to the jawbone.
While the term can be used metaphorically to describe a sudden and unexpected setback or criticism that feels emotionally jarring, its primary connotation remains rooted in physical aggression. It typically implies a direct act of violence, an assault, or a physical altercation that involves forceful contact to the mouth region.
The expression "punch in the mouth" often signifies the extreme violation of personal boundaries, as well as the intentional infliction of harm or injury on another individual. This context emphasizes the gravity and severity of the act, highlighting the potential for physical harm and the violation of someone's personal integrity.
