fearless
unafraid
accessible
approachable
calm
candid
communicative
conversable
coolheaded
demonstrative
effusive
expansive
extroverted
frank
free
free-speaking
free-spoken
free-tongued
gossipy
inexcitable
nerveless
newsy
nothing loath
open
outgoing
outspoken
relaxed
rock-steady
self-revealing
self-revelatory
sociable
steady
steady-handed
steady-nerved
steel-nerved
stick-at-nothing
strong-nerved
talkative
unabashed
unappalled
unaverse
unawed
unblenching
unblinking
unconstrained
uncowed
uncringing
undaunted
undismayed
unfaltering
unflinching
ungrudging
assure
doglike
everduring
high-hearted
iron-like
rock-like
self-forgetful
steadfast
take-it-or-leave-it
uncomplaining
unconquerable
undepressed
undeviating
undiminished
unexcitable
unhesitating
unperturbed
unshaken
unswerving
unwinking