concerned

As adjectives the difference between keen and concerned

is that keen is showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense while concerned is showing concern.

As verbs the difference between keen and concerned

is that keen is (rare) to sharpen; to make cold or keen can be to utter a keen while concerned is (concern).

As a noun keen

is a prolonged wail for a deceased person.

As verbs the difference between concerned and mollified

is that concerned is (concern) while mollified is (mollify).

As an adjective concerned

is showing concern.

As adjectives the difference between concerned and calm

is that concerned is showing concern while calm is (of a person) peaceful, quiet, especially free from anger and anxiety.

As verbs the difference between concerned and calm

is that concerned is (concern) while calm is to make calm.

As a noun calm is

(in a person) the state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion.

As adjectives the difference between concerned and perturbed

is that concerned is showing concern while perturbed is disturbed; flustered.

As verbs the difference between concerned and perturbed

is that concerned is past tense of concern while perturbed is past tense of perturb.

As verbs the difference between alarmed and concerned

is that alarmed is (alarm) while concerned is (concern).

As adjectives the difference between alarmed and concerned

is that alarmed is having an alarm fitted while concerned is showing concern.

As adjectives the difference between insouciant and concerned

is that insouciant is carefree, nonchalant, indifferent; casually unconcerned while concerned is showing concern.

As a verb concerned is

past tense of concern.

As adjectives the difference between concerned and disconcerting

is that concerned is showing concern while disconcerting is tending to cause discomfort, uneasiness or alarm; unsettling; troubling; upsetting.

As a verb concerned

is (concern).

As adjectives the difference between duteous and concerned

is that duteous is (archaic) obsequious; submissively obedient while concerned is showing concern.

As a verb concerned is

(concern).

As adjectives the difference between contemptuous and concerned

is that contemptuous is showing contempt; expressing disdain; showing a lack of respect while concerned is showing concern.

As a verb concerned is

(concern).

As adjectives the difference between concerned and puzzled

is that concerned is showing concern while puzzled is confused or perplexed.

As verbs the difference between concerned and puzzled

is that concerned is (concern) while puzzled is (puzzle).