Synonyms for Intellectual:

adj.

academic (adjective)
scholarly.
all (adjective)
noetic, rational.
deep (adjective)
sound.
intellectual (adjective)
reasoning, intelligent, thinking, understanding, rational, egghead, cerebral, brainy, psychological.
intelligent (adjective)
encyclopedic, sophisticated, astute, sharp, bright, brilliant, sagacious, perspicacious, knowledgeable, canny, intelligent, capable, wise, profound, clever, cogent, smart, gifted, worldly, knowing, Comprehending, brainy, erudite, genius.
knowing (adjective)
omniscient, informed, versed, cognizant, encylopedic, intelligent, streetwise, experienced, competent, erudite, shrewd, knowing, canny, learned, wise, educated.
learned (adjective)
philosophic.
sagacious (adjective)
intelligent, wise, adept, genius, scholarly, brilliant, authoritative, philosophic, master, expert, sagacious.
very smart (adjective)
highbrow, brainy, rational, bookish, learned, highbrowed, cerebral, Intellective, intelligent, mental, studious, scholarly, psychological, thoughtful.
well-informed (adjective)
learned.

n.

insightful, incisive, sound, deductive, meditative, perceptive, reasoned. psychic, observer, veteran, professional, the intelligentsia, mental, Intellective, psychical, specialist, pundit. thoughtful, qualified, worldly-wise, literate, well-read, trained. ability. brain. intellect (noun)
thinker.
intellectual (noun)
highbrowed, good, reflective, highbrow, sophisticated, cerebral, serious, intellect, rational, noetic.
mental (noun)
studious, bookish, study at intelligent.
person (noun)
intellect.
pundit (noun)
philosopher.
sage (noun)
authority, wise person, mandarin, guru, thinker, consultant, sage, savant.
scholar (noun)
master, student, philosopher, professor, genius, doctor, academic, scholar, expert.
very smart person (noun)
egghead, brain, sage, doctor, thinker, academic, scholar, genius, pundit, philosopher.

Other synonyms:

thoughtful, deductive, incisive, Intellective, reasoned, the intelligentsia, meditative, well-read, observer, psychical, literate, pundit, worldly-wise. brain, veteran. qualified, informed, specialist. professional. mental
mental, psychic.

Usage examples for intellectual

  1. Without her sister, the Princess Royal's, remarkable intellectual power, Princess Alice had fine intelligence. – Life of Her Most Gracious Majesty the Queen, (Victoria) Vol II by Sarah Tytler
  2. Your world is a mental world, an intellectual world. – Analyzing Character by Katherine M. H. Blackford and Arthur Newcomb
  3. Harmony of intellectual tastes. – Shirley by Charlotte Brontë