WordNet sense 1 (being of second rank or importance or value; not direct or immediate):

secondary

WordNet sense 2 (descended from a common ancestor but through different lines):

collateral

WordNet sense 3 (acting through or dependent on an intervening agency):

mediate

WordNet sense 4 (not straightforward):

tortuous

WordNet sense 5 ((of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects):

discursive, rambling

WordNet sense 6 (indirect in departing from the accepted or proper way; misleading):

devious, oblique

WordNet sense 7 (roundabout and unnecessarily wordy):

circumlocutory

WordNet sense 8 (marked by obliqueness or indirection in speech or conduct):

circuitous, roundabout

WordNet sense 9 (of a path e.g.):

wandering

WordNet sense 10 ((used especially of glances) directed to one side with or as if with doubt or suspicion or envy):

sidelong, squint