What is the difference between delightful and delighted?

English Language Tests, Intermediate level

ESL/EFL Test #69 [color=blue]“How to compliment”, question 2

I can honestly say I haven’t had such a meal for ages.

(a) delight
(b) delighted
© delightful
(d) delighting

English Language Tests, Intermediate level

ESL/EFL Test #69 [color=blue]“How to compliment”, answer 2

I can honestly say I haven’t had such a delightful meal for ages.

Correct answer: © delightful

Your answer was: [color=red]incorrect
I can honestly say I haven’t had such a delighted meal for ages.
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What is the difference between DELIGHTFUL and DELIGHTED.

‘Delightful’ is an adjective, ‘delighted’ is the past tense of the verb ‘to delight’.

Hello, please someone help me: would I be right in writing: delightful meal, delighted meal and delighting meal? And what is the difference? I just think: delightful meal is just a meal which is delightful; delighted and delighting meal is also a meal which is delightful and has been finished, or being at talking time; Am I right?

A delightful meal is the correct description of the meal.

You are delighted to have eaten such a meal.

Delighting is a nonsense of a word.

Thank you sir, I get it.