Final answer:
In Wordsworth's poetry, 'suckled' is used metaphorically to mean being raised within a specific belief system, in this case, an ancient Pagan one.
Step-by-step explanation:
The word suckled typically refers to an infant being breastfed or fed on its mother's milk. In the poetic context of William Wordsworth's "The World Is Too Much with Us," the term suckled is used metaphorically to express being nurtured or brought up within a particular belief system or way of life. The speaker, expressing a desire to be suckled in a creed outworn, implies a wish to be raised with ancient Pagan beliefs, allowing for a closer and more mystical connection with nature, in contrast to the disconnected modern life.
The word suckled in the given context means to be nursed or raised with a particular belief or faith. In the poem, the speaker expresses a desire to be like a pagan who was nurtured in a faith that is no longer widely practiced. The speaker longs for a connection to nature and a sense of divine presence that he feels is lacking in his modern existence.