sceacan

Part of speech: verb
Verb type: strong verb (6)
(p scéoc, scóc; p.p. sceacen, scacen, scæcen) 1. to shake, quiver; to (cause to) vibrate; 2. to move quickly; to run (also scacan)
Etymology
[Mod E SHAKEProt-Germ *skakan; O Fris skeka “to run”; O Sax skakan “to go off, depart”; Icel skaka “to shake, tremble”]
Paradigm

4.1.6. - VI class

The sixth class was characterized by the Prot-Germ vowel gradation ă – ō – ō– ă [← Indo-Europ quantitative ablaut ŏ – ō – ō – ŏ].

This vowel gradation finds the following expression in Anglo-Saxon (depending on the surroundings of the stem vowel):

VI class infinitive past tense singular past tense plural past participle
to shake, quiver scacan, sceacan scóc, scéac scócon, scéacon scacen
to lift up, raise hebban hóf hóf hafen, hæfen
to strike; to beat sléan slóȝ, slóh slóȝon slæȝen
to stand standan, stondan stód stódon standen, stonden