1.
large group; swarm; horde; throng
A very large number of people, animals, or things gathered or moving together.
イワシの大群が現れた。
A huge school of sardines appeared.
バッタの大群が農地を襲った。
A swarm of locusts attacked the farmland.
観光シーズンになると、大群の観光客がこの島を訪れる。
When tourist season arrives, throngs of tourists visit this island.
Composed of 大 (large) + 群 (group, flock). Used for impressively large numbers of living things — animals, insects, people — or sometimes objects. The word emphasizes the sheer scale of the group.
COMMON COLLOCATIONS:
- 蝶の大群: a swarm of butterflies
- 大群で押し寄せる: to swarm in; to descend in large numbers
- 大群が発生する: a large group/swarm appears
SIMILAR WORDS:
- 群れ: group; flock; herd — more neutral in size
- 集団: group; mass — more organized, often used for people
- 群衆: crowd; throng — specifically a crowd of people