Translation of "unexpectedly" into Basque

In the literature I live in, the one written in Basque, almost all the books that are most important to me are missing: poetry, endless novels, short stories, essays, correspondence, manuals. I think this orphanhood is greater than losing a father unexpectedly.

Bizi naizen literaturan, euskarazkoan, niretzat garrantzitsuenak diren liburu ia guztiak falta dira: poesia, nobela amaiezinak, llaburrak, saiakerak, gutun-trukeak, eskuliburuak. Uste dut zurztasun hori handiagoa dela aita bat ustekabean galtzea baino.