Third-person singular simple present indicative form of untether.(verb)
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Use "untethers" in a sentence
"The space station untethers, bound for outer limits."
"And then he untethers Samson and takes him back to his field while I wander off to examine his gypsy caravan."
"Next week, I'll follow up with a second post about what goes on inside people's heads that untethers them from reason just far enough to be swept away by their fears."