wildfire
Concise Oxford English Dictionary © 2008 Oxford University Press:
wildfire/ˈwʌɪldfʌɪə(r)/
▶noun
- 1 historical a highly flammable liquid used in warfare.
- 2 less common term for will-o'-the-wisp.
– phrases
spread like wildfire spread with great speed.
spread like wildfire spread with great speed.
'wildfire' also found in these Oxford entries:

