The word of the day is desultory:
1. lacking in consistency, constancy, or visible order, disconnected; fitful
2. digressing from or unconnected with the main subject; random
Latin dēsultōrius pertaining to a dēsultor (a circus rider who jumps from one horse to another), equivalent to dēsul-, variant stem of dēsilīre to jump down ( dē- de- + -silīre, combining form of salīre to leap) (dictionary.com) "Jacaranda, a fresh-air fiend, installed herself in a desultory compartment of the train, pulled off her stockings (under the latest edition of Der zaftig Tagblut), rotated her head gracefully, propped her feet up on the knees of the passenger snoring opposite her, and broke out the oscillating fan she'd last used during one of Beau Romano's incandescent tantrums."
- Karen Elizabeth Gordon, Out of the Loud Hound of Darkness: A Dictionarrative
I guess she's using it to mean "random"?