saliva, sputum
唾 centers on the fluid produced in the mouth: saliva or sputum, the liquid that can be spit out.
唾 combines 口 (mouth) with 垂, which likely contributes the sound and the idea of something hanging or dripping down, as saliva does from the mouth.
The mouth 口 on the left and 垂 on the right, which looks like something hanging down, together suggest saliva dripping from the mouth.
For ダ, imagine a drop of saliva falling with a soft 'da' sound as it hits the ground: da -> ダ, and the mouth 口 lets the drop fall from 垂.
saliva; spit; spittle
spittoon
saliva; sputum
saliva held in one's mouth during times of tension
disdain; contempt; scorn; abhorrence
saliva (in one's mouth)
words once spoken cannot be taken back
to spit
to spit
to call dibs; to establish a claim; to spit on (thus preventing others from taking it)
to spit
detestable; despicable; abhorrent
salivation; secretion of saliva
salivary gland
salivary-gland chromosome
salivary gland
salivary-gland chromosome
to hold one's breath (in fear, anxiety, etc.)
to harm oneself as a result of trying to harm someone else; to cut off one's nose to spite one's face; to turn to the sky and spit
to harm oneself as a result of trying to harm someone else; to cut off one's nose to spite one's face; to spit at the sky