Home › Words › F › fafillionfafillionfafillion means an indefinitely large number.EtymologySee -illion.nounAn indefinitely large number.e.g.“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.” — 2014, Jessica Thompson, Paper Swans: Tracing the path back to love:Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.infinitillion 72% match — An unspecified large number. vs fafillion →fucktillion 71% match — An unspecified large number (of); a zillion. vs fafillion →bijillion 68% match — An unspecified large number (of). vs fafillion →googillion 68% match — An indefinitely large number. vs fafillion →jillion 66% match — An unspecified large number (of). vs fafillion →bazillion 66% match — An unspecified large number (of). vs fafillion →jajillion 65% match — An unspecified large number (of). vs fafillion →babillion 65% match — An unspecified large number (of). vs fafillion →