Strong's #1748: duwmam (pronounced doo-mawm')
from 1826; still; adverbially, silently:--dumb, silent, quietly wait.
Brown-Driver-Briggs Hebrew Lexicon:
ּּ
dûmâm
1) silence (noun masculine)
2) in silence, silently (adverb)
Part of Speech: see above in Definition
Relation: from H1826
Usage:
This word is used 3 times:
Isaiah 47:5: "Sit thou silent, and get thee into darkness, O daughter of the Chaldeans: for thou shalt no"
Lamentations 3:26: "It is good and quietly wait for the salvation of the LORD."
Habakkuk 2:19: "to the wood, Awake; to the dumb stone, Arise, it shall teach!"