Synonyms for Hydra:

n.

decomposer, germ, listeria, ameba, amoeba, bacillus, E. COLI, microbe, bacteria. bogeyman, bogey, bigfoot, bunyip, chimera, daemon, creature, boogeyman, the Abominable Snowman, centaur. hydra (noun)
snake.
object (noun)
snake.

Other synonyms:

germ, microbe, bacillus, decomposer, bacteria, listeria, E. COLI, amoeba. Other relevant words:
bogeyman, bacillus, germ, creature, bogey, bacteria, listeria, boogeyman, centaur, bigfoot, microbe, amoeba, decomposer, bunyip, ameba, daemon, chimera.

Usage examples for hydra

  1. If the hydra loses its three heads, it must at last die. – Marie Antoinette And Her Son by Louise Muhlbach Official