The phrase "a pattern of improper" is correct and usable in written English.
It can be used to describe a recurring behavior or trend that is deemed inappropriate or unacceptable in a certain context.
Example: "The investigation revealed a pattern of improper conduct among the staff that needed to be addressed immediately."
Alternatives: "a trend of inappropriate" or "a series of unacceptable".
Quietly, methodically, he described a pattern of improper, even criminal, behavior inside the sheriff's office.
Today marks the beginning of what is expected to be an important new phase of the trial, after the judge recently permitted evidence to be submitted which the prosecution claims shows a pattern of improper behaviour with young boys.
Mrs. Mitchell counters that as an administrative nurse, she had a professional obligation to protect patients from what she saw as a pattern of improper prescribing and surgical procedures — including a failed skin graft that Dr. Arafiles performed in the emergency room, without surgical privileges.
Swallow, 54, is charged with a pattern of unlawful activity during that time, which, among other things, consists of money laundering, accepting improper gifts and soliciting a bribe — all second-degree felonies.
The office was accused of engaging in "a pattern of misconduct and improper communications" with the judge handling Polanski's case in the recent documentary Roman Polanski: Wanted and Desired.
The request alleged that the film, which had its premiere in Cannes last May, revealed "a pattern of misconduct and improper communications" between the district attorney's office and the judge handling Polanski's case.
The investigation concluded that Koetters had engaged in a pattern of misconduct, "including instances of improper physical contacts and communications with multiple Marlborough students … often using his position of authority to prompt improper discussions and invitations for further contact".
Two years after an academic fraud scandal tarnished the Minnesota men's basketball program and led to the departure of Coach Clem Haskins, the school's women's coach was fired yesterday for a pattern of rule breaking that included improper benefits to players.
Emmerson described it as "quite improper" for a minister from a department involved in the inquest to contact her without the knowledge of her legal team, and said it was part of a "pattern of behaviour in the case".
