The best replacement for bulky is lean.

The best alternatives to bulky are rated as following:
★★★★★  lean
★★★  chunky yarn
★★★  ripped
★★  toned
★★  lean muscle
★  skinny guys
★  shredded
★  athletic
★  worsted
  lean men
  lean muscles
  heavy duty
  super bulky
  worsted weight

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Speaking about bulky, one probably shouldn't forget about weights.

Other search terms related to bulky and their ratings are:
★★★★★ weights
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Google Trends

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bulky
lean
chunky yarn