Volatile – Likely to change suddenly and unexpectedly, especially by getting worse

(Pronounced vole-ah-tyle)

To remember the definition of the word volatile, use the following mnemonic:

'Voila, a tile' (volatile) said the magician. Most magicians would pull out a rabbit but a tile? It was sudden and unexpected and this show was certainly getting worse. 

Examples of volatile in a sentence

Because Mary and Frank have a volatile relationship, they often argue.

The couple’s volatile marriage ended in divorce.

Easily annoyed, the volatile old man often yelled at the neighbourhood kids.