1. To disguise or conceal behind a false appearance. See Synonyms at disguise.
2. To make a false show of; feign.
To disguise or conceal one's real nature, motives, or feelings behind a false appearance.
The sentence he used it in, and I've found I like...
One must not attempt to dissemble another who is previously, and more compitently, engaged in same.
Anyone care to guess the translation?