ADJECTIVE (that cannot be solved/explained)

6 collocations in this category

Frequency:
7+Very Common
4-7Common
<4Less Common
be insolubleinsoluble
8.5
seem insolubleinsoluble
8.0
almost insolubleinsoluble
7.0
apparently insolubleinsoluble
6.8
seemingly insolubleinsoluble
6.7
remain insolubleinsoluble
6.5