1. complex quantity (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
  2. complacent contented to a fault with oneself or one's actions
  3. complement something added to embellish or make perfect
  4. compliment a remark expressing praise and admiration
  5. complexity the quality of being intricate and compounded
  6. complex conjugate either of two complex numbers whose real parts are identical and whose imaginary parts differ only in sign
  7. complex sentence a sentence composed of at least one main clause and one subordinate clause
  8. complementary serving to fill out, enhance, or supply what is lacking
  9. complaisant showing a cheerful willingness to do favors for others
  10. complacently in a self-satisfied manner
  11. complexion texture and appearance of the skin of the face
  12. complementarity a relation between two opposite states or principles that together exhaust the possibilities
  13. complimentary expressing praise and admiration
  14. complicated difficult to analyze or understand
  15. complex number (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
  16. complex complicated in structure
  17. complexness the quality of being intricate and compounded
  18. complacency the feeling you have when you are satisfied with yourself
  19. compliant disposed to act in accordance with someone's wishes
  20. implication something that is inferred