[ˌɪntəˈfɪə], (Verb)

Definitions:
- intervene in a situation without invitation or necessity
(e.g: you promised not to interfere)

- prevent (a process or activity) from continuing or being carried out properly
(e.g: a holiday job would interfere with his studies)

- handle or adjust (something) without permission, especially so as to cause damage
(e.g: he admitted interfering with a van)

- (of light or other electromagnetic waveforms) interact to produce interference
(e.g: light pulses interfere constructively in a fibre to emit a pulse)

- (of a horse) knock one foot against the fetlock of another leg


Phrases:

Origin:
late Middle English: from Old French s'entreferir ‘strike each other’, from entre- ‘between’ + ferir (from Latin ferire ‘to strike’)