OFFICIOUS
- volunteering ones services where they are neither asked nor needed meddlesome.
- volunteering one's services too eagerly [adj OFFICIOUSLY]
- typically describes a person who tends to offer unwanted advice in a way that annoys the advice recipients.
- Assertive of authority in an annoyingly domineering way, esp. with regard to petty or trivial matters
- Intrusively enthusiastic in offering help or advice; interfering