kryptonite

noun

1. 1

   figurativeThe one weakness of something or someone that is otherwise invulnerable.

   The terrific seven-grain bread here is the kryptonite of restaurant reviewers: two mini-loaves and you are incapacitated.

   So while recording or sampling a Charlie Manson track […] makes for shock rock kudos aplenty, a devotion to Hubbard is kryptonite for credibility.

   We all have our own kryptonite or kryptonites, so don't tempt yourself by listening to so-called friends who are just demonic tools being used to bring you under.

   But of course porn is kryptonite to many investors.

2. 2

   slangCrack cocaine.

verb

1. 1

   To expose to, or attack with, kryptonite.

   And even those two were pretty puny, like Superman after he had been kryptonited.

2. 2

   figurativeTo destroy, wreck, or ruin; to affect adversely, as Superman is affected by kryptonite.

Forms

plural

kryptonites

past tense

kryptonited

past participle

kryptonited

present participle

kryptoniting

third person singular

kryptonites