ADV

carefully
a carefully negotiated series of concessions
successfully
freely
individually, separately
Rents are individually negotiated between landlord and tenant
jointly
directly
negotiating directly with the rebels
secretly
constantly, continually
The parameters of the job are being continually negotiated

VERB + NEGOTIATE

be able to
be prepared to, be willing to
Are the employers really willing to negotiate?
attempt to, seek to, try to
manage to
help (to)

PREP

between
to negotiate between the two sides
for
We are negotiating for the release of the prisoners
on
They have refused to negotiate on this issue
on behalf of
negotiating on behalf of Britain
with
I managed to negotiate successfully with the authorities

ADV

easily, safely
He safely negotiated the slippery stepping stones

VERB + NEGOTIATE

be difficult to
The flight of steps was quite difficult to negotiate with a heavy suitcase