Post.
host, most, boast, toast go to coast, post, roast, etc. most, host, toast, boast, coast, post, roast, etc.
tense
Extensive, Pensive, Hypertensive, Defensive
Bough.
limb
boast, ghost, host, post, roast, toast
ghost boast
no
coast, boast, toast, most,etc.
Tense could be a word that rhymes with fence and is formed from the principal parts of a verb (tense, tensed, tensed).
Fence, pence, sense, tense, whence
Yes, the end rhymes in Beowulf's boast are in the form of alliteration rather than traditional end rhymes found in later poetry. In Old English poetry, alliteration (repeated initial sounds) was used to create rhythm and structure within the lines.
something like "i gotta fence" makes me tense
I say it's a verb
host, most, boast, toast go to coast, post, roast, etc. most, host, toast, boast, coast, post, roast, etc.
tense
Extensive, Pensive, Hypertensive, Defensive