📒 used with superlatives, and with all and every, to emphasize that something is the best, worst, etc. that you can imagine, or includes every possible example
The house has the most spectacular views imaginable.
They stock every imaginable type of pasta.
Each trainee must be able to respond effectively to all imaginable crises.
📒 possible to imagine
These technological developments were hardly imaginable 30 years ago.
To such poor people, the idea of having a choice of food is barely imaginable.
What those prisoners went through is hardly imaginable.