Old English borian "to bore through, perforate," from bor "auger," from Proto-Germanic *buron (source also of Old Norse bora, Swedish borra, Old High German boron, Middle Dutch boren, German bohren), from PIE root *bhorh- "hole."
abstract suffix of state, from Old English dom "statute, judgment" (see doom (n.)). Originally an independent word, but already active as a suffix in Old English (as in freodom, wisdom). Cognate with German -tum (Old High German tuom). "Jurisdiction," hence "province, state, condition, quality."
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<a href="https://www.etymonline.com/word/boredom">Etymology of boredom by etymonline</a>
Harper, D. (n.d.). Etymology of boredom. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/boredom