Thick As Thieves Idiom. The original form of the idiom was thick as two thieves thick in this case meaning close sharing confidences intimate and familiar by association as two criminals working together would be forced to conspire and operate in isolation from normal social life. As you may have guessed from that lead in the two phrases are entirely unconnected. Anna and Beth are together all the time these daystheyre as thick as thieves. Theyre as thick as thieves.
All of these idioms are about as useful as a poopie flavored lolli-pop. As thick as thieves Having a close intimate friendship or alliance. Anna and Beth are together all the time these daystheyre as thick as thieves. Early 1800s See also. The word thick as used in the idiom as thick as two thieves means intimate familiar closely allied sharing confidences. Come thick and fast.
Roughly equivalent to todays BFFs.
American Heritage Dictionary of IdiomsBoston. This term uses thick in the sense of intimate a usage that is obsolete except in this simile. The original form of the idiom was thick as two thieves thick in this case meaning close sharing confidences intimate and familiar by association as two criminals working together would be forced to conspire and operate in isolation from normal social life. The bartender was chummy with the regular customers. All of these idioms are about as useful as a poopie flavored lolli-pop. Early 1800s See also.