The opposite chemically is oily, but both are slippery.
For soapy meaning maudlin, teary, or emotional, the opposite could be unsentimental, unemotional, or matter-of-fact.
soapy was not allowed
Soapy (containing soap, as in soapy water) is 'savonneux' (masc.) or 'savonneuse' (fem.) in French.
After washing the dishes, there was a soapy residue left in the sink.
Please soak this in soapy water.
yes, bases are soapy to touch and are corrosive in nature.
Soapy Smith was born in Coweta County, Georgia.
soapy water
Yes, it is not neutral; more frequently basic.
The mineral with a soapy feel is called talc. Talc has a greasy or soapy texture and is often used in powders and cosmetic products.
No. Bases feel soapy. Though feeling either is not recommended.
This is not universally true, but Bases tend to have a 'soapy' feel. NB: I would not recommend your plunging you hands into every bucket of base you see, however ... some can burn.
A base has a slippery soapy feel.