Exposure to radioactive kryptonite weakened Superman.
green
Frequency:
40
%
The glowing green rock was identified as kryptonite.
powerful
Frequency:
35
%
The powerful effects of kryptonite drained Superman's strength.
Idiomatic Expressions for kryptonite
Phrase: Kryptonite to my productivity
Meaning: Something that hinders or greatly reduces one's ability to be productive or efficient.
Usage: Social media is kryptonite to my productivity; I can't resist checking it every few minutes.