believe Look up believe at Dictionary.com
O.E. belyfan "to believe," earlier geleafa (Mercian), gelefa (Northumbrian), gelyfan (W.Saxon) "believe," from P.Gmc. *ga-laubjan "hold dear, love" (cf. O.S. gilobian, Du. geloven, O.H.G. gilouben, Ger. glauben), from PIE base *leubh- "to like, desire" (see love). Spelling beleeve is common till 17c.; then altered perhaps by influence of relieve. To believe on instead of in was more common in 16c. but now is a peculiarity of theology; believe of also sometimes was used in 17c.