§ 19. The secondary accent. The secondary or subordinate accent is of as great importance as the chief or primary accent in determining the rhythmical character of the alliterative line. It is found in the following classes of words:
(i) In all compounds of noun + noun, or adjective + noun, or adjective + adjective, the second element of the compound has the subordinate accent, e.g. hēah-sètl, gū́ð-rinc, hríng-nèt, sṓð-fæ̀st. Syllables with this secondary accent are necessary in certain cases as links between the arsis and thesis, as in forms like þégn Hrṓðgā̀res (–́|–́×̀×) or fýrst fórð gewā̀t (–́|–́××̀).
(ii) In proper names like Hrṓðgā̀r, Bḗowùlf, Hýgelā̀c, this secondary accent may sometimes count as one of the four chief metrical accents of the line, as in
béornas on bláncum þǣr wæs Béowúlfes.Beow. 857.
contrasted with
éorl Béowùlfes éalde lā́fe. Beow. 797.
(iii) When the second element has ceased to be felt as a distinct part of the compound, and is little more than a suffix, it loses the secondary accent altogether; as hlā́ford, ǣ́ghwylc, ínwit, and the large class of words compounded with -līc and sum.
þæt he Héardrḗde hlā́ford wǣ́re. Beow. 2375.
lúfsum and lī́ðe lḗofum monnum. Cri. 914.