Unfussable

The "Rose" was an angel; good-natured, immensely competent and strong, unfussable and docile.

Veale looked up from behind his paperwork with the unfussable equanimity of a kung fu master. 'Shut the door, please, Murray.'

Gabrielle delighted him and he spent every free moment in her company. 'She has your temperament, my darling,' he smiled lovingly at his wife. 'Calm and unfussable.'