Swarm

#139
Swarm
- A large or dense group of flying insects.
- An aggregation of persons or animals, especially when moving in mass.

Magical ever changing shapes of the swarming starlings.
Image Credits : Gail

Usage:
- During the summer, tourists swarm the little beach-side town.
- The dead sheep was covered with swarms of flies.

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Juxtapose

#138
Juxtapose
- To place side by side for comparison.

Usage:
- The premiere attempts to juxtapose the good and the bad of online daters.
- A display that juxtaposes modern art with classical art

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Impregnable

#137
Impregnable
- Impossible to capture or enter by force.
- Strong enough to resist or withstand attack.

The old intra-mural city of Manila is surrounded by a parapeted wall which, at the time it was built, was considered to be one of the most impregnable fortifications in the world.
Image Credits : John Tewell 

Usage:
- Apple Inc Claims Its New iPhones Are Impregnable.
- Each clan added such wonderful innovations to the fort’s defences that Daulatabad was considered virtually impregnable.
- Cook’s fortitude and defence looked impregnable.