Stale, Hackneyed
Noun and な adjective
ちんぷ
陳腐な台詞しか思い浮かびません。
I can’t think of anything but cliched lines.
If you keep exhibiting the same actions and emotions and phrases eventually they're going to rot and sound cliched to everyone. You have to mix things up once in a while. You don't want to get stale, do you?!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Just watch out for ふ becoming ぷ.