Example sentences:

Ramayana:  When Shurapanakha saw that Ravana’s reaction to her humiliation by Rama was tepid, she changed tack and started inciting Ravana’s lust by describing Sita’s beauty.

Mahabharata: After the exile, when the Pandavas discussed options for regaining their kingdom from Duryodhana, Balaram’s response was tepid — it seemed he had started believing Duryodhana’s version of what had happened.

Bhagavad-gita:  When we get opportunities for spiritual growth, our mind’s reaction is often tepid, but we need to use our intelligence to tap those opportunities.