It has become common to impugn the honor of people who are accused of failing to denounce the objectionable conduct of others.

Others witnessed or heard enough that they showed poor judgment in not taking appropriate steps to satisfy themselves that the objectionable conduct would not recur.

In a written opinion, Judge Lebovits noted that the co-op alleged that Michael Davis, a tenant shareholder, engaged in objectionable conduct throughout his tenancy.

The judge noted that before voting to terminate the lease, the board gave him a chance to respond, and that Mr. Davis "does not deny the objectionable conduct."

And under most proprietary leases and house rules, Mr. Dobkin said, excessive noise would be considered objectionable conduct.

Although small in number, the ticket cancellations may represent the largest action taken by a National Football League team to curb objectionable conduct.

In other words, once the co-op decided that Mr. Pullman had engaged in objectionable conduct, his lease could be terminated and he could be evicted.

It did so by affirming a lower court decision that allowed a Manhattan co-op to evict a tenant shareholder for objectionable conduct without first taking the matter to court.

"In most proprietary leases, termination of a tenancy for objectionable conduct can be made by vote of two-thirds of the board of directors," Mr. Weinstein said.

In this case, the co-op said, the troublesome shareholder was the sponsor, and his objectionable conduct was rerenting unsold apartments.