imperturbable

Imperturbable is a related term of lax.

As an adjective imperturbable

is not easily perturbed, upset or excited.

Imperturbable is a related term of heedless.

As adjectives the difference between imperturbable and heedless

is that imperturbable is not easily perturbed, upset or excited while heedless is unaware, without noticing.

As an adjective imperturbable

is not easily perturbed, upset or excited.

As a noun equanimity is

the state of being calm, stable and composed, especially under stress.

Imperturbable is a related term of slack.

As an adjective imperturbable

is not easily perturbed, upset or excited.

As a verb slack is

.

As adjectives the difference between imperturbable and equanimous

is that imperturbable is not easily perturbed, upset or excited while equanimous is calm and composed; of stable disposition.

As adjectives the difference between imperturbable and impermeable

is that imperturbable is not easily perturbed, upset or excited while impermeable is impossible to permeate.

As adjectives the difference between imperturbable and speedy

is that imperturbable is not easily perturbed, upset or excited while speedy is rapid; swift.

As adjectives the difference between imperturbable and decisive

is that imperturbable is not easily perturbed, upset or excited while decisive is .

As a noun insouciance

is carelessness, heedlessness, indifference, or casual unconcern.

As an adjective imperturbable is

not easily perturbed, upset or excited.

As adjectives the difference between deadpan and imperturbable

is that deadpan is deliberately impassive or expressionless (as a face or look) while imperturbable is not easily perturbed, upset or excited.

As a noun deadpan

is a style of comedic delivery in which something humourous is said or done while not exhibiting a change in emotion or facial expression.

As a verb deadpan

is to express (oneself) in an impassive or expressionless manner.