Related by context. Frequent words. (Click for all words.) 65 efficient 62 inexpensive 57 convenient 57 affordable 55 environmentally friendly 53 environmentally responsible 53 economically viable 52 feasible 51 reliable 51 expensive 50 effective 49 attractive 49 cheaper 49 reasonably priced 48 user friendly 47 adaptable 47 cheapest 46 advantageous 46 practical 45 eco friendly 45 ideal 45 durable 45 desirable 45 viable 44 easy 44 alternative 44 dependable 43 easiest 42 compact 42 flexible 42 environmentally conscious 42 versatile 41 simpler 41 cheap 41 readily available 41 profitable 41 straightforward 41 elegant 41 optimal 41 technologically advanced 41 enjoyable 41 simplest 40 usable 40 conventional 40 sustainable 40 optimum 40 hassle 40 commercially viable 40 workable 40 without sacrificing 39 sensible 39 alternatives 39 greener 39 scalable 39 cheaply 39 economically 39 useful 39 prohibitive 39 cost 39 intuitive 39 effortless 38 efficiently 38 palatable 38 doable 38 stylish 38 inconvenient 38 environmentally 38 solution 38 pleasurable 37 responsive 37 frugal 37 ingenious 37 easily accessible 37 suitable 37 sophisticated 37 agreeable 37 costly 37 cleanest 37 greenest 36 attainable 36 innovative 36 optimized 36 without compromising 36 simple 36 productive 36 preferable 35 modern 35 costlier 35 practicality 35 convenience 35 ideally suited 35 option 35 accessible 35 easier 35 fleets 35 amenable 35 efficiency 35 flavorful 35 achievable 35 acceptable 35 necessity