If "etch" means to carve or engrave:
* Smooth: This is a general antonym for creating a rough surface.
* Erase: This specifically refers to removing markings or engravings.
* Blur: This suggests a lack of sharpness or definition, the opposite of etching's precision.
If "etch" means to impress something strongly on the mind:
* Forget: This is the most direct antonym for etching something into memory.
* Dismiss: This implies ignoring or rejecting the impression.
* Obliterate: This is a stronger word meaning to erase completely.
In the context of artistic techniques:
* Paint: While not an exact opposite, painting often uses smooth, flowing lines in contrast to the sharp lines of etching.
* Sculpt: This involves adding material rather than removing it, as in etching.
The best antonym for "etch" will depend on the specific situation and the intended meaning.