Seraphic describes something or someone as angel-like. It comes from the word seraph, which is another word for an angel. The plural of seraph is seraphim, which is actually the original word and all other variations are back formations.
Seraphic also makes the adverb seraphically.
He crossed oceans of water and time to escape the titular seraph and to see if Marjorie, the book’s protagonist and the sister of Holly, can help end his journeying. [Jewish Exponent]
Mezzo-soprano Patricia Bardon as Magdalene quickly tugs at the heart-strings with an impassioned performance, as does the captivating power of Russell Thomas Lazarus and the beautiful counter-tenor of Daniel Bubeck pas one of the desert combat-clad seraphim. [Morning Star Online]
The question arises, however, as to whether Beethoven wasn’t being deliberately vulgar by scoring so grotesque a B-flat after the chorus has maintained a long, high, seraphic concord in F. [Wall Street Journal]
A tall, red-haired girl with a seraphic smile, infallibly polite on the telephone, always able to distinguish a visiting CEO from a journalist trying his luck, Arabella – slight tendency to prolong her lunch hour until 2.25pm notwithstanding – has garnered the heartfelt esteem of everyone from the managing director to the office junior. [Independent]
In Act I, after a serene but appropriately measured encounter with Paris, her first meeting with Romeo led to her unleashing a stage-devouring but – in time-honoured Mariinsky fashion – entirely tasteful sequence of skips and jetés that took the breath away: seldom can rapture have looked more seraphically vivid or beautiful, and there was already a strong sense of a character with rich inner life. [The Telegraph]