thinned (adj.)

• adulterated
• airy
• attenuate
• attenuated
• cut
• dilute
• diluted
• ethereal
• fine
• flimsy
• gaseous
• insubstantial
• rare
• rarefied
• reduced
• slight
• subtle
• tenuous
• thin
• unsubstantial
• vaporous
• watered
• windy