collected (adj.)

• accumulated
• agglomerate
• aggregate
• allied
• assured
• balanced
• bound
• calm
• clustered
• combined
• comfortable
• complacent
• composed
• confident
• conglomerate
• conjoined
• connected
• controlled
• cool
• coupled
• easy
• easygoing
• equanimous
• gathered
• glomerate
• imperturbable
• incorporated
• integrated
• intimate
• joined
• joint
• knotted
• levelheaded
• linked
• matched
• mated
• meeting
• merged
• nonchalant
• packaged
• paired
• peaceful
• placid
• poised
• possessed
• quiet
• sanguine
• sedate
• self-assured
• self-confident
• self-possessed
• self-satisfied
• serene
• smug
• stacked
• still
• sure
• tied
• together
• tranquil
• treasured
• undivided
• unexcited
• unflappable
• united
• unperturbed
• unruffled
• wedded
• well-balanced