Wiktionary
monothematic
a. 1 Dealing with only one theme or topic. 2 (context onomastics of a name English) Composed of a single traditional name element.
Usage examples of "monothematic".
His first song ran a gamut of transparent double entendre and monothematic suggestion that would have brought blushes to the cheeks of the blowsiest barmaid, ana was accordingly received with tumultuous applause.