il-

=> in-.

if, if any, if necessary, if only, igloo, igneous, ignite, ignition, ignoble, ignobly, ignominious, ignominiously, ignominy, ignoramus, ignorance, ignorant, ignorantly, ignore, iguana, ikon, ilex, ilk, ill, ill-advised, ill-advisedly, ill-assorted, ill-bred, ill-considered, ill-defined, ill-disposed, ill-educated, ill-fated, ill-favoured, ill-founded, ill-gotten, ill-judged, ill-mannered, ill-natured, ill-neturod, ill-omened,