Collocations for indecent - adj.

be, seem
consider sth, regard sth as (BrE), think sth (esp. BrE)
photographs that are considered indecent

grossly, positively
conduct which is grossly indecent
That skirt of hers is positively indecent.

almost
She started a new relationship with almost indecent haste.

Indecent is used with these nouns:
assault, haste, material, photograph