unsolved

Everyday

Not yet solved, answered or explained: an unsolved mystery, an unsolved problem. tree →

In the lessons

In maths: unsolved problems – some famous puzzles are still unsolved by anyone. In detective stories and the news: unsolved crimes, «cold cases». In science: unsolved questions drive research. Phrases: «an unsolved mystery», «unsolved crime», «remain unsolved».

Examples

• The mystery of the missing cake remains unsolved. tree →
• Some maths problems are still unsolved after hundreds of years. tree →
• The detective reopened the unsolved case. tree →
• Question 5 is still unsolved on my worksheet. tree →
• Scientists have many unsolved questions about the universe. tree →
• The crime remained unsolved for many years. tree →

Note

Opposite: «solved». Often after «remain» or «still». An unsolved problem is not the same as an unsolvable one (impossible to solve).

In Jewish tradition

In maths: unsolved problems – some famous puzzles are still unsolved by anyone. In detective stories and the news: unsolved crimes, «cold cases». In science: unsolved questions drive research. Phrases: «an unsolved mystery», «unsolved crime», «remain unsolved».

Examples

• The reason why they have remained so long an unsolved problem is partly due to a lack of knowledge of Hebrew orthography, on which the Sefer Yetzirah is based. (Mordell, The Origin of Letters and Numerals according to Sefer Yetzirah (1914)) tree →

Note

Opposite: «solved». Often after «remain» or «still». An unsolved problem is not the same as an unsolvable one (impossible to solve).