balanced bovine collected composed constant cool dispassionate dull easy even-tempered fast fiducial firm firm as Gibraltar fixed flinty immovable impassive imperturbable in equilibrium inexcitable inflexible inirritable loyal nonchalant patient predictable relaxed reliable secure set settled solid sot sound stable staunch steadfast steady steely stoic stolid substantial TRUE unbending undeflectable undisturbable unflinching unirritable unnervous unpassionate unruffled unshakable unshaken unswerving unwavering unyielding well-balanced without nerves