verb (used with object), un·set·tled, un·set·tling.
verb (used without object), un·set·tled, un·set·tling.
Examples from the Web for unsettle
Roberts has staked his survival on branding Orman with the label most likely to unsettle undecided Kansans.A Loss by Pat Roberts in Kansas? Actually, Not So Bizarre|Jeff Greenfield|October 3, 2014|DAILY BEAST
It didn't take long for him to unsettle Hiram, Mrs. Macy says.
It might unsettle you, I thought, even tempt you to come to Melbourne, where the risk would be terrible.Nevermore|Rolf Boldrewood
The common people was better off without it, ez edjucashun hed a tendency to unsettle their minds.The American Mind|Bliss Perry
British Dictionary definitions for unsettle
Word Origin and History for unsettle
1590s, "undo from a fixed position, from un- (2) + settle (v.). Of the mind, feelings, etc., attested from 1640s. Unsettled "not peaceful, not firmly established" is recorded from 1590s. Meaning "not occupied by settlers" is attested from 1724. Related: Unsettled; unsettling.