lithest

/L IH1 TH AH0 S T/
adjective
  1. 1

    Mild; calm.

    โ€œlithe weatherโ€

  2. 2

    Slim but not skinny.

    โ€œlithe bodyโ€

  3. 3

    Capable of being easily bent; flexible.

    โ€œthe elephantโ€™s lithe proboscis.โ€

  4. 4

    Adaptable.

Source: https://en.wiktionary.org/wiki/lithe, https://en.wiktionary.org/wiki/lithest