This entry for 万无一失 is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Does 万无一失 appear elsewhere on Lughet?
Yes — 万无一失 appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.