Dictionary.com
Thesaurus.com

rats

British  
/ ræts /

interjection

  1. an exclamation of rejection or disdain

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. slang deranged; insane

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"The people using these products are, in essence, becoming lab rats," Adam Taylor, professor of anatomy at Lancaster University, explains.

From BBC

With funding from FAPESP, the team examined how ongoing use of omeprazole influenced the absorption of key minerals in rats.

From Science Daily

Small rodents such as rats and mice are known to produce laryngeal whistles, but horses are the first large mammal identified using this method.

From Science Daily

The servant muttered something about rats and left.

From Literature

The researchers examined how rats learn behaviors and how they regulate their actions.

From Science Daily