From the ArcaMax Publishing, Vocabulary Newsletter:
http://www.arcamax.com/news/vocabulary/s-568859-340457
officious \uh-FISH-uhs\ (adjective) - Marked by excessive eagerness in
offering services or advice where they are neither requested nor
needed; meddlesome.
"You are too officious
In her behalf that scorns your
services.
Let her alone: speak not of Helena,
Take not
her part; for if thou dost intend
Never so little show of love
to her,
Thou shalt aby it." -- William Shakespeare, 'A Midsummer
Night's Dream'
Officious comes from Latin officiosus, obliging, dutiful, from
officium, dutiful action, sense of duty, official employment, from
opus, a work, labor + -ficere, combining form of facere, to do, to
make. It is related to official, of or pertaining to an office or
public trust.