oblivious（）

He worked as a man obsessed, oblivious to family and friends, shunning holidays, forgetting anniversaries.

At length as the craft was cast to one side, and ran ranging along with the White Whale's flank, he seemed strangely oblivious of its advance—as the whale sometimes will---and Ahab was fairly within the smoky mountain mist, which, thrown off from the whale's spout, curled round his great Monadnock hump; he was even thus close to him; when, with body arched back, and both arms lengthwise high-lifted to the poise, he darted his fierce iron, and his far fiercer curse into the hated whale.