spit, vomit, belch, confess, tell (lies)
吐 centers on forcefully expelling something from the mouth: spitting, vomiting, or belching. The confess and tell (lies) senses extend this idea to forcefully bringing out words or secrets.
吐 combines 口 (mouth) with 土, which likely contributes the sound ト. The character expresses oral expulsion.
The mouth 口 is beside the earth 土. Picture someone spitting or vomiting onto the ground: 吐 is to expel from the mouth.
For ト, imagine the sound of spitting: a sharp 'toh!' as something is expelled from the mouth. The sound 'toh' cues ト.
to breathe out; to breathe
to vomit; to throw up; to spit up
nausea; feeling like throwing up; feeling sick
expressing one's mind; speaking out
vomiting; emesis
to vomit; to spit out
sigh; long breath
vomiting blood; hematemesis
vomit; vomiting
vomit; spew; disgorge
vomiting and diarrhea (diarrhoea)
bloody vomit
acetonemic vomiting; cyclic vomiting syndrome
to throw up; to vomit; to spew
to vomit; to throw up
to dump core; to dump memory contents
spillway
emetic
antiemetic
to be nauseating; to be disgusting; to be revolting