Simple past tense and past participle of maintain.(verb)
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Use "maintained" in a sentence
"Starting with issue #1 Jan. 9, 2008, the title maintained a steady publication schedule for most of the first eight issues, but that seems to have fallen by the wayside."
"The Iraqi government under President Saddam Hussein maintained from the start that Speicher perished at the crash site."
"The Iraqi government under President Saddam Hussein maintained from the start that Speicher perished at the site where his F/A-18 fighter jet crashed in the desert."