there's no rhyme or reason to/for something
no rhyme or reason
No particular logic, sense, method, or meaning to a given situation, action, person, thing, group, etc. I've looked over it several times, but there's no rhyme or reason to the document we were sent this morning.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
there’s no ˌrhyme or ˈreason to/for something,
without ˌrhyme or ˈreasonno sense or logical explanation: There has been no rhyme or reason to market movements in recent weeks. ♢ Changes were being made without rhyme or reason.This phrase comes from Shakespeare’s play As You Like It: ‘But are you so much in love as your rhymes speak?’ ‘Neither rhyme nor reason can express how much’.
Farlex Partner Idioms Dictionary © Farlex 2017