越发 is an adverb meaning 'increasingly' or 'all the more', used to emphasize a growing degree or intensity of a state, feeling, or action. Though composed of 越 (yuè, 'to surpass' or 'the more') and 发 (fā, here functioning as a grammatical intensifier rather than its common meaning 'to send' or 'to issue'), the two characters together form an inseparable compound that modifies verbs, adjectives, or entire clauses. It often appears in formal or literary contexts but remains common in modern spoken Chinese when expressing gradual intensification.

The word typically follows a subject and precedes a predicate — for example, after a noun or pronoun and before an adjective or verb phrase. It frequently co-occurs with comparative structures or time-related expressions (e.g., 随着…, 越来越…) but differs from 越来越 in that it doesn’t require repetition and often carries a slightly more emphatic or literary nuance. It’s especially common in describing deepening emotions, worsening conditions, or strengthening realizations.