Significatio vocis horresco | Babel Free

Definitiones

1. to begin to bristle up; one's hair rises on end
   conjugation-3, no-supine
2. to become terrified
   conjugation-3, no-supine
3. to begin to shiver, shake, tremble, shudder
   conjugation-3, no-supine
4. to start to dread
   conjugation-3, no-supine, transitive

Exempla

““Ecce! Autem geminī ā Tenedō tranquilla per altā — horrēscō referēns! — immēnsīs orbibus anguēs incumbunt pelagō, pariterque ad lītora tendunt.” “Look! And now, [coming] from Tenedos, through the placid deep – I shudder [in] retelling [it]! – twin snakes with endless coils lean into the sea, and advance together toward the shore.” – Aeneas”

Gradus CEFR