[@Keksalot] As Jace says, faeries love twisty wordplay. To quote the wiki, "The Fair Folk are also unable to lie. They might, however, tell what they believe is true, even if it is not. They may also expertly weave lies into sentences by using methods such as not telling the whole truth, letting others assume things, or not correcting the people with whom they're speaking; this does not, however, apply to half-fey, who can lie as easily as any other being." Thus, what Jace has stated is generally accurate, though I might propose that implying to an assassin that you want somebody dead without directly telling them to kill the target can later let you claim innocence on the matter of ordering their deaths with relatively little wordplay, depending on how you word both statements.