Final answer:
The use of 'enough' in the poem 'That I did always love' stresses that life without love was insufficient and not fully lived, underlying love's importance in completeness.
Step-by-step explanation:
The effect of the use of the word "enough" in the quotation from "That I did always love" is to emphasize the idea that the speaker's life was not fully lived or complete without the experience of love. The word "enough" suggests that prior to loving, life was insufficient or lacking in depth and meaning. By stating "I never lived—enough", the poet highlights the transformative power of love and its essential role in defining a life worth living.