complacent

As adjectives the difference between complacent and vain

is that complacent is uncritically satisfied with oneself or one's achievements; smug while vain is overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason.

As an adjective complacent

is uncritically satisfied with oneself or one's achievements; smug.

As a noun passive is

.

As adjectives the difference between complacent and tranquil

is that complacent is uncritically satisfied with oneself or one's achievements; smug while tranquil is free from emotional or mental disturbance.

As adjectives the difference between sleepy and complacent

is that sleepy is tired; feeling the need for sleep while complacent is uncritically satisfied with oneself or one's achievements; smug.

As a noun sleepy

is (informal) the gum that builds up in the eye.

As adjectives the difference between comfortable and complacent

is that comfortable is comforting, providing comfort; consolatory while complacent is uncritically satisfied with oneself or one's achievements; smug.

As a noun comfortable

is a stuffed or quilted coverlet for a bed; a comforter.

As a verb condone

is to forgive, excuse or overlook (something).

As an adjective complacent is

uncritically satisfied with oneself or one's achievements; smug.

As adjectives the difference between proactive and complacent

is that proactive is acting in advance to deal with an expected change or difficulty while complacent is uncritically satisfied with oneself or one's achievements; smug.

As a noun confidence

is passive self-assurance.

As an adjective complacent is

uncritically satisfied with oneself or one's achievements; smug.

As adjectives the difference between complacent and indifferent

is that complacent is uncritically satisfied with oneself or one's achievements; smug while indifferent is not caring or concerned; uninterested, apathetic.

As an adverb indifferent is

to some extent, in some degree (intermediate between very and not at all); moderately, tolerably, fairly.