The suffix ‘less’ added to an adjective means ‘without’ or ‘insufficient’, for example: ‘fearless’ (without fear) or ‘careless’ (insufficient attention). The list below shows some examples of these adjectives.

ageless“He’s growing old but somehow he looks ageless.”
careless“After the accident he was accused of careless driving.”
cureless“Unfortunately her illness is cureless.”
defenceless“Many of the attacks were carried out on defenceless civilians.”
endless“They had endless conversations on the subject.”
flawless“You’re lucky. You’ve got flawless skin.”
harmless“The dog barks a lot at people but it’s harmless.”
headless“Investigators are running around like headless chickens.”
heartless“The dictator is a cruel heartless man.”
heedless“The boys walked along the edge of the cliff heedless of the danger.”
homeless“The number of homeless people continues to increase.”
hopeless“The situation is not hopeless as it seems.”
jobless“Without state benefits many of the jobless would be destitute.”
mindless“The demonstration turned into a scene of mindless violence.”
painless“Don’t worry. I can assure you it will be painless.”
powerless“We were completely powerless against the rising flood water.”
priceless“Many of the sculptures exhibited are priceless.”
sleepless“A new baby is usually the cause of many sleepless nights!”
speechless“Her amazing declaration left the audience speechless.”
tasteless“The food was disappointing – they found it tasteless.”
thoughtless“His thoughtless comments caused a lot of embarrassment.”
toothless“The baby greeted us with a big toothless smile.”
toplessTopless swimsuits are not allowed on this beach.”
useless“The bicycle was so badly damaged that it was useless“.
worthless“He later discovered that the agreement was worthless.”