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zillionth Synonyms
Another word for zillionth
Choosing another word for zillionth depends on context, so the synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
• adjective (Context 1)
Constituting an extremely high, unspecified ordinal number in a series; used hyperbolically to emphasize that something has happened many times before.
Usage Example
"For the umpteenth time, please remember to lock the front door when you leave."
Strongest
umpteenth
millionth
Strong
billionth
nth
• noun (Context 2)
The item or occurrence at an extremely large, unspecified position in a sequence (used hyperbolically).
Usage Example
"This complaint is the umpteenth we have received about the slow internet connection this week."
Strongest
umpteenth
• noun (Context 3)
One of a zillion equal parts of a whole; an infinitesimally small fraction.
Usage Example
"The sensor can detect changes in temperature down to a fraction of a degree."
Strong
fraction
Weak
sliver
Opposites of zillionth
The opposite of zillionth shifts depending on context. Common opposites include:
first
initial
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Zillionth. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/zillionth