Expedient comes from Latin expedient- ‘extricating, putting in order’, from the verb expedire . 

The word "expedient" was first used in English as an adjective in the 14th century.  As a noun, it first appeared in 1630. The word originates from Latin, meaning "extricating, putting in order".  OED's earliest evidence for expedient is from around 1430, in a translation by John Lydgate, poet and prior of Hatfield Regis. 

Examples of expedient used in a sentence:  
"Either side could break the agreement if it were expedient to do so"
"The manager came up with a simple and expedient solution"
"The latter expedient, common in North America, was much less so in England."
"It was decided that holding a public inquiry into the scheme was not expedient" 
"The government chose short-term expedients instead of a real economic policy." 
"We can solve this problem by the simple expedient of taking out another loan." 

Just the facts:

EXPEDIENT Definition & Meaning - Merriam-Webster

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