imperturbable

/หŒษชmpษ™หˆtษœหbษ™bษ™l/

IPA: /IH0 M P ER1 T ER0 B AH0 B AH0 L/

adjective
  1. 1

    Not easily perturbed, upset or excited.

  2. 2

    Calm and collected, even under pressure.

Source: https://en.wiktionary.org/wiki/imperturbable