Valmiki Ramayana 2.35.4

वाक्यवज्रैरनुपमैर्निर्भिन्दन्निव चाशुगैः ।कैकेय्या सर्वमर्माणि सुमन्त्रः प्रत्यभाषत॥

vākyavajrairanupamairnirbhindanniva cāśugaiḥ |kaikeyyā sarvamarmāṇi sumantraḥ pratyabhāṣata ||

Our plain-language meaning of this verse is waiting for scholar review.