Thrym
Old English and Norse
The meanings of thrym in Old English and Norse may imply a belief that power and might was associated with boasts, or beot in Anglo-Saxon https://bosworthtoller.com/3779 The term has multiple meanings.
In Norse mythology, Þrymr (Thrymr, Thrym; "uproar") was king of the jǫtnar(jutes).
https://en.wikipedia.org/wiki/%C3%9Erymr
Old English wiktionary: þrymm host, army, force, power, glory
Bossworth’s: force, power, might
Icelandic(wiktionary): þrymja to thunder
Tweet on boasts: ‘Boasting in a lot of ways is like magic. It does have the effect of attributing power/skills/intellect to people through the use of words… and not action. This is why we associate the magician with uttering/speaking spells.’