Final answer:
The connotation of 'interminable' suggests a negative emotional response to something that feels endlessly prolonged or wearisome, beyond just being very long or infinite.
Step-by-step explanation:
The connotation of interminable goes beyond its literal meaning of something being endless or seemingly infinite. When used, it often implies a negative feeling of something being tiresomely prolonged or annoyingly incessant. For instance, the phrase 'The forest seemed interminable; nowhere did he discover a break in it, not even a woodman's road.' from the provided text suggests a sense of weariness or despair over a forest's vastness and the consequent difficulty it presents.
Thus, 'interminable' is not just about the quantitative measure of time or length, but also carries an emotional weight that implies a situation is unbearably long or never-ending, often associated with a lack of hope for a conclusion.