Words similar to unsuccessful

Example sentences for: unsuccessful

How can you use “unsuccessful” in a sentence? Here are some example sentences to help you improve your vocabulary:

This finding underscores the versatility of PEI as a method for introducing genes into postmitotic populations of cells, particularly as our previous efforts to transfect sympathetic neurons using lipid-based reagents (Lipofectamine and Lipofectin) had been unsuccessful.
Lee comes on to virtually every beautiful woman he meets and has an amazing amount of success for someone so otherwise unsuccessful and so thickened with dissipation.
They attempted to grow cotton in the thin layer of soil but were unsuccessful, and at the announcement of emancipation they abandoned the island, leaving their slaves behind.
(Saigo is a problematic hero in Japanese history: in 1871 he was killed in an unsuccessful rebellion against the very government he helped to found. )
At the end of unsuccessful cyber-events, everyone always praises them as "historic."