1) Carefully 1) Hand and glove 2) Hand in glove 3) In close cooperation 
co-operative, cooperative; co-operatively, cooperatively 1. Done in cooperation with others: 'They tried to make a cooperative effort.' 2. Marked by willingness to cooperate; compliant: 'She was a cooperative patient.' 3. Of, relating to, or formed as an enterprise or organization jointly owned or managed by those who use its facilities or servic...