def conjugate_matrix(matrix):
    """Conjugates all entries of matrix.

    Returns the conjugated matrix.

    Args:
        matrix (2-D list): Matrix.

    Returns:
        Conjugated matrix.
    """
    conj_matrix = [[0] * len(matrix[i]) for i in range(len(matrix))]
    for i, row in enumerate(matrix):
        for j in range(len(row)):
            conj_matrix[i][j] = matrix[i][j].conjugate()

    return conj_matrix