Illegible.
A word that means difficult or impossible to read is illegible. Illegible is also defined as being hard to decipher when reading.
Poodles are very smart and you can teach them to associat the picture of a word with the action. It is very hard though
Persevered is what I would use. Ex. I tried very hard to climb a mountain to I persevered to climb a mountain
havnt read un-read
another word gor hard work, is work hard. which comes from america, which comes from greek. toil
A word that means to read very carefully is peruse.
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Another word for 'working hard' is: - Persevere - diligence Only two I gave you!
"Ancient" is another word for very old.
soft
another word for very large
another word could be difficult or severely