Clue: Hard to penetrate
We have 1 answer for the crossword clue Hard to penetrate.
Possible Answers:
Related Clues:
- Concentrated
- Closely compacted
- (k) Thick
- Cement-headed
- Heavy, like some baked goods
- (k) Really thick
- Simple-minded
- Like rain forests
- Slow on the uptake
- Crammed
- Packed
- Thick as a brick
- Like a blockhead
- Not exactly a genius
- Land hoppers
- Postman's beat
- Compact
- Not too astute
- Thick
- No rocket scientist
- Like platinum
- Not getting it
- Closely packed
- Thickly packed
- Tightly packed
- ... and 36 more.
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