abrogate
assay
background
black
box
button
cancel
check
circle
concept
confirm
control
denial
disclaimer
elide
examine
extinguish
flat
icon
illustration
incorrect
insist
leave
light
mark
negation
negative
no
none
quality
quash
question
quit
refusal
retract
round
shadow
sign
suppress
survey
symbol
theme
verify
waive
wrong
yellow