Comment by CookieMon

"Paltering" is another one, with an "Artful Paltering" psyc paper differentiating it as:

* Lying by omission - the passive omission of relevant information.

* Paltering - active use of truthful statements to convey a misleading impression.

But knowbody will know what you mean if you use the word paltering, so "by omission" would still be the go-to phrase.