List of “Understand words with prefixes and suffixes“

Word	Prefix/Suffix	Meaning
unhappy	un-	not happy
redo	re-	do again
replay	re-	play again
unfair	un-	not fair
untie	un-	to take apart something tied
refill	re-	fill again
retell	re-	tell again
unzip	un-	open a zipper
unkind	un-	not kind
reheat	re-	heat again
helpful	-ful	full of help
playful	-ful	full of play
careful	-ful	full of care
thankful	-ful	full of thanks
joyful	-ful	full of joy
fearless	-less	without fear
careless	-less	not careful
hopeless	-less	without hope
endless	-less	without end
painless	-less	without pain
unhappy	un-	not happy
unlock	un-	open something locked
redo	re-	do again
retake	re-	take again
unpack	un-	take out of a pack
rename	re-	name again
rebuild	re-	build again
replay	re-	play again
unwell	un-	not feeling well
uneven	un-	not even
refill	re-	fill again
helpful	-ful	full of help
careful	-ful	full of care
truthful	-ful	full of truth
cheerful	-ful	full of cheer
useless	-less	not useful
homeless	-less	without a home
fearless	-less	without fear
loveless	-less	without love
rewrap	re-	wrap again
reopen	re-	open again
rewash	re-	wash again
rewrite	re-	write again
unclean	un-	not clean
unclear	un-	not clear
unlock	un-	open something locked
untidy	un-	not tidy
remake	re-	make again
restart	re-	start again
unwrap	un-	remove wrapping
unsafe	un-	not safe
unkind	un-	not kind
unfriendly	un-	not friendly
restart	re-	start again
rewind	re-	go back
kindest	-est	the most kind
bigger	-er	more big
tallest	-est	the most tall
cleaner	-er	more clean
darkest	-est	most dark
colder	-er	more cold
fastest	-est	the most fast
older	-er	more old
newest	-est	the most new
slower	-er	more slow
happiest	-est	the most happy
brighter	-er	more bright
nicest	-est	the most nice
smaller	-er	more small
smarter	-er	more smart
weakest	-est	the most weak
stronger	-er	more strong
richest	-est	the most rich
thinner	-er	more thin
wetter	-er	more wet
driest	-est	the most dry
colder	-er	more cold
warmer	-er	more warm
kindest	-est	the most kind
darkest	-est	the most dark
singer	-er	a person who sings
player	-er	a person who plays
painter	-er	a person who paints
helper	-er	a person who helps
teacher	-er	a person who teaches
walker	-er	a person who walks
jumper	-er	a person who jumps
driver	-er	a person who drives
builder	-er	a person who builds
reader	-er	a person who reads
writer	-er	a person who writes
swimmer	-er	a person who swims
baker	-er	a person who bakes
dancer	-er	a person who dances
cleaner	-er	a person who cleans

Let’s practice!