If you need to make a case for a request, but you think your methods of persuasion will have to include deception or flattery, you need to learn the verb “inveigle.” It comes from the Old French verb “aveugler,” meaning “to blind.” Grammatically, “inveigle” can be used with an object: “She inveigled him into giving her a better table.” Or it can be used in a sense specifically related to gaining entry to a place: “He inveigled himself into the meeting room.” Either way, there’s some trickery afoot.