foolproof
adjective/ˈfulpruːf/
Frequency rank: #14,731 of 20,003 in the WORDED list (wordfreq data)
Meaning
So simple and reliable that it cannot go wrong or be used incorrectly.
Example sentence
The instructions were so foolproof that even a young child could follow them without making mistakes.
Synonyms & related words
- reliable
- simple
- infallible
- fail-safe
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