Collocations for neutral - adj.

be | remain, stay

strictly
The government maintained its strictly neutral policy.

completely | basically, broadly
The Russians took a broadly neutral position.

politically
The meeting must be at a politically neutral location.

about
neutral about this issue

be, seem
Her expression seemed neutral.

remain | keep sth
Dolly kept her voice carefully neutral.

perfectly | fairly, quite, relatively
She chose fairly neutral make-up.

apparently | carefully

be, seem

culturally, ethically, ideologically, morally, politically
Behaviour is never culturally neutral.

gender neutral
She argued that the law should always be gender neutral (= apply in exactly the same way to men and women).