Final answer:
The diction in 'I wandered lonely as a cloud' is joyful, using words like 'daffodils' and 'dancing' to create a cheerful atmosphere.
Step-by-step explanation:
The diction in 'I wandered lonely as a cloud' is joyful, employing words like 'daffodils' and 'dancing' to evoke a cheerful and vibrant atmosphere. The use of words like 'crowd' and 'host' also indicates a sense of abundance and liveliness. Additionally, the description of the daffodils 'fluttering and dancing in the breeze' further enhances the joyful connotation of the diction.