in default of something
in default of (something)
Due to the absence or lack of something; through the failure of something. Though it was only a speeding ticket, Janet was imprisoned in default of paying the fine. In default of concrete evidence, the jury was obligated to acquit the defendant of murder.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
in deˈfault of something(formal) because of a lack of something: They accepted what he had said in default of any evidence to disprove it.
Farlex Partner Idioms Dictionary © Farlex 2017