tackily
Tackily is an adverb that describes something done in a way that is excessively or offensively sentimental, melodramatic, or garish. It suggests a lack of subtlety or good taste, often leaning towards the overly sweet or gaudy. For example, a greeting card with glitter and saccharine poetry might be described as tackily decorated. Similarly, a film plot that relies on improbable coincidences and tear-jerking moments to evoke emotion could be criticized as tackily written.
The term often implies that something is trying too hard to be impressive or appealing, but fails