1. definitely without question and beyond doubt
  2. infiniteness the quality of being infinite; without bound or limit
  3. infinite having no limits or boundaries in time or space
  4. unoffending not offending
  5. infinitive the uninflected form of the verb
  6. infinitesimal immeasurably small
  7. affinity a natural attraction or feeling of kinship
  8. valve-in-head engine internal-combustion engine having both inlet and exhaust valves located in the cylinder head
  9. fanjet engine a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust
  10. infant feeding feeding an infant
  11. anointing the act of applying oil or an oily liquid
  12. inventorying making an itemized list of merchandise or supplies on hand
  13. Vincent's angina an acute communicable infection of the respiratory tract and mouth marked by ulceration of the mucous membrane
  14. infinity time without end
  15. infantryman fights on foot with small arms
  16. ion engine a type of reaction-propulsion engine to propel rockets in space; a stream of positive ions is accelerated to a high velocity by an electric field
  17. infant school British school for children aged 5-7
  18. inviting attractive and tempting
  19. in-fighting conflict between members of the same organization
  20. infinitely continuing forever without end