Final answer:
The simile 'lonely as a cloud' describes the speaker's emotions in the poem 'I wandered lonely as a cloud' by William Wordsworth.
Step-by-step explanation:
In the poem 'I wandered lonely as a cloud' by William Wordsworth, the simile 'lonely as a cloud' describes the speaker's emotions.
The speaker compares themselves to a cloud that is floating aimlessly, suggesting a feeling of isolation or loneliness.
This simile helps convey the speaker's state of mind and sets the tone for the rest of the poem.