inside
preposition
uk/ˌɪnˈsaɪd/ uswithin or working for a company or organization:
They had been helped by someone working inside the firm.
(also inside of)
if you do something or something happens inside (of) a particular time or limit, you do it or it happens in less than that amount of time:
The work should be finished inside a week.
inside
adjective
uk/ˌɪnˈsaɪd/ usobtained by someone in a group, organization, or company and therefore involving special or secret knowledge:
He was able to give me inside knowledge on the company's finances.
in or employed by a company or organization:
As expected, the inside candidate was appointed.
have the inside track
to have a special position within an organization, or a special relationship with a person, that gives you advantages or information that other people do not have :
She is said by analysts to have the inside track on how the industry works.