Main Entry: in·ter·fere

Pronunciation: \ˌin-tə(r)-ˈfir\

Function: intransitive verb

Inflected Form(s): in·ter·fered; in·ter·fer·ing

Etymology: Middle English enterferen, from Anglo-French (s')entreferir to strike one another, from entre- inter- + ferir to strike, from Latin ferire — more at bore

Date: 15th century

1 : to interpose in a way that hinders or impedes : come into collision or be in opposition
2 : to strike one foot against the opposite foot or ankle in walking or running —used especially of horses
3 : to enter into or take a part in the concerns of others
4 : to act reciprocally so as to augment, diminish, or otherwise affect one another —used of waves

synonyms see interpose

— in·ter·fer·er noun