An example of to soothe is to rock a crying baby to sleep.
Origin of soothe
- Middle English sothen to verify from Old English sōthian from sōth true es- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English sothen (“to verify, prove the validity of"), from Old English sōþian (“to verify, prove, confirm, bear witness to"), from Proto-Germanic *sanþōnÄ… (“to prove, certify, acknowledge, testify"), from Proto-Indo-European *sont-, *sent- (“being, true"). Cognate with Danish sande (“to verify"), Swedish sanna (“to verify"), Icelandic sanna (“to verify"), Gothic [script?] (suthjan), [script?] (suthjōn, “to soothe"). See also sooth.