Another way of saying "easily deceived"?
"Easily deceived" can be reworded as simply "gullible". If someone is "gullible" or "easily deceived", they are also "naive".
A dupe is a man easily tricked
"A credulous man; a man easily tricked."
There are also numerous informal or slang words for the person who is gullible or easily deceived including
- patsy
- mark
- rube
- sucker
- dupe
- chump
- fall guy
- gull
- soft touch
- mug
- fool