Fafillion
noun, slang
noun, slang ·Uncommon ·College level
Definitions
Noun
- 1 An indefinitely large number. excessive, informal
"She had asked her dad, in her piping, childlike tones, if 'a million billion fafillion' people lived in the city. He had said 'not quite', but that she was 'pretty close' and this had made her smile."
Example
More examples"She had asked her dad, in her piping, childlike tones, if 'a million billion fafillion' people lived in the city. He had said 'not quite', but that she was 'pretty close' and this had made her smile."
Etymology
See -illion.
More for "fafillion"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.