spare

thin and fit

“the spare figure of a marathon runner”

“a body kept trim by exercise”

more than is needed, desired, or required

“trying to lose excess weight”

“found some extra change lying on the dresser”

“yet another book on heraldry might be thought redundant”

“skills made redundant by technological advance”

not taken up by scheduled activities

“a free hour between classes”

“spare time on my hands”

kept in reserve especially for emergency use

“a spare tire”

“spare parts”

lacking in magnitude or quantity

“a bare livelihood”

“a scanty harvest”

“a spare diet”

lacking embellishment or ornamentation

“a plain hair style”

“unembellished white walls”

“functional architecture featuring stark unornamented concrete”

an extra component of a machine or other apparatus

an extra car wheel and tire for a four-wheel vehicle

a score in tenpins; knocking down all ten after rolling two balls

refrain from harming

“They spare him from writing the letter”

save or relieve from an experience or action

“I'll spare you from having to apologize formally”

give up what is not strictly needed

“he asked if they could spare one of their horses to speed his journey”

use frugally or carefully