Etymology

cp. OIcel reisa ‘to raise, erect, start’ < PGmc *raisjan-, a wk. causative derivative on the pret. sg. stem of PGmc *rīsan- ‘to rise’ (Go urreisan, OIcel rísa, OE rīsan etc.); cp. Go urráisjan ‘to raise, rouse’, next to OE rǣran < PGmc *raizjan- with Verner's Law (and MDu reren, OHG rēren ‘to cause to fall’).

PGmc Ancestor

*raisjan- 

Proposed ON Etymon (OIcel representative)

reisa ‘to raise, erect, start’ 
(ONP reisa (2) (vb.))

Other Scandinavian Reflexes

Far reisa, Icel reisa, Norw reisa, Dan rejse, Sw resa

OE Cognate

rīsan 'to rise, stand up; seize', pret. 3 sg. ind. rās

Phonological and morphological markers

ON /ei/ &lt; PGmc */ai/

Summary category

A1*c

Attestation

Widespread by 14c, but some signs of restriction to the N and E earlier on (viz. found in a1250 Wooing Lord (Tit D.18), but not elsewhere in the AB tradition).

Occurrences in the Gersum Corpus

Gaw 821, 1916; Pe 305; WA 829*, 5174

Bibliography

MED reisen (v.1) , OED3 raise (v.1) , HTOED , HTOED , HTOED , HTOED , EDD rise (v.1 and sb.1), Dance raysed, Bj. 49, de Vries reisa (2), Mag. reisa (3), Bj-L. reise (1), Seebold reis-a-, Orel *raisjanan ~ *raizjanan, Kroonen *raizjan-, AEW rǣran