Two words that I recently encountered have piqued my interest. The first one is:
1. Appealing in a cheap or showy manner: tawdry.
2. Based on pretense or insincerity.
Until I looked up that word I assumed that it meant having merit or being valuable. I was wrong.
The other word is:
Of course that word is actually two different words each having differing pronunciations and differing definitions.
definition -- not valid
definition -- impaired
Words, words, words... always fascinating.