Wordnet 3.0
ADJECTIVE (1)
1. 
 requiring little if any patience or effort or skill; 
- Example: "the pay was adequate and the job undemanding"- Example: "simple undemanding affection"- Example: "an undemanding boss"
WordNet (r) 3.0 (2006):
undemanding
    adj 1: requiring little if any patience or effort or skill; "the
           pay was adequate and the job undemanding"; "simple
           undemanding affection"; "an undemanding boss" [ant:
           demanding]
Moby Thesaurus II by Grady Ward, 1.0:
32 Moby Thesaurus words for "undemanding":
   blanket, casual, flexible, general, imprudent, indiscreet,
   indiscriminate, indiscriminative, insensitive, nonjudgmental,
   pliant, promiscuous, tactless, unaustere, uncritical,
   uncriticizing, undifferentiating, undiscreet, undiscriminating,
   undiscriminative, unexacting, unfastidious, unharsh, unmeticulous,
   unparticular, unselective, unsevere, unstrict, unsubtle, untactful,
   wholesale, yielding