flexible(ABLE TO CHANGE)
malleable
SMART Vocabulary: related words and phrases
Strong-willed
adamancy
adamant
adamantine
adamantly
aggressive
grittily
gutsily
gutsy
gutty
hard-boiled
pertinacious
pertinaciously
pigheaded
pigheadedly
purposeful
ultra-militant
ultra-serious
unbroken
undaunted
unmovable