No security system is foolproof.
Source: tatoeba (945663)
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18 translations across 14 languages.
9 total sentences available.
No security system is foolproof.
Source: tatoeba (945663)
Nothing is foolproof to a talented fool.
Source: tatoeba (1233446)
The system is hardly foolproof.
Source: tatoeba (5305588)
But, and yes there is always a but, the plan seemed foolproof until unforeseen complications arose.
Source: tatoeba (11865676)
Showing 4 of 9 available sentences.
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.