Are you one of those people who puts ketchup in their grilled cheese?
Why did you name your doggy Nikka?
Why are you attaching leeches to your head?
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means attach so the verb version is to attach.
The reading is actually the same as the one you learned with the kanji, meaning you should be able to read this one just fine.