INCESSANT

ceaseless, constant, incessant, never-ending, perpetual, unceasing, unremitting

(adjective) uninterrupted in time and indefinitely long continuing; “the ceaseless thunder of surf”; “in constant pain”; “night and day we live with the incessant noise of the city”; “the never-ending search for happiness”; “the perpetual struggle to maintain standards in a democracy”; “man’s unceasing warfare with drought and isolation”; “unremitting demands of hunger”

Source: WordNet® 3.1

Etymology

Adjective

incessant (comparative more incessant, superlative most incessant)

Without pause or stop; not ending, especially to the point of annoyance.

Synonyms

• unremitting

• continuous

• unceasing

Anagrams

• anticness, cantiness, instances, tenascins

Source: Wiktionary

In*ces"sant, a. Etym: [L. incessans, -antis; pref. in- not + cessare to cease: cf. F. incessant. See Cease.]

Definition: Continuing or following without interruption; unceasing; unitermitted; uninterrupted; continual; as, incessant clamors; incessant pain, etc. Against the castle gate, . . . Which with incessant force and endless hate, They batter'd day and night and entrance did await. Spenser.

Syn.

– Unceasing; uninterrupted; unintermitted; unremitting; ceaseless; continual; constant; perpetual.

Source: Webster’s Unabridged Dictionary 1913 Edition