English Thesaurus

Synonyms of 'thoughtful'

(adjective) 
Definition
quiet, serious, and deep in thought
He was looking very thoughtful.
Synonyms
reflective
Marek is a quiet, reflective man.
,
pensive
She looked suddenly sombre and pensive.
,
contemplative
He is a quiet, contemplative sort of chap.
,
meditative
Music can induce a meditative state in the listener.
,
thinking
Thinking people on both sides will applaud this book.
, , ,
wistful
There was a wistful look in his eyes when he spoke of his childhood.
,
introspective
I'm very introspective and shy; terribly so.
, , ,
lost in thought
,
deliberative
,
ruminative
,
in a brown study
Opposites
(adjective) 
Definition
considerate in the treatment of other people
a thoughtful and caring man
Synonyms
considerate
I think he's the most charming, considerate man I've ever met.
,
kind
He was a very kind man, full of common sense.
,
caring
He is a wonderful person, very gentle and caring.
,
kindly
He was a stern critic but an extremely kindly man.
,
helpful
The staff in the London office are helpful.
,
attentive
He is a wonderful host and is always attentive to his guests.
, ,
solicitous
He was so solicitous of his guests.
Opposites
(adjective) 
Definition
showing careful thought
a thoughtful and scholarly book
Synonyms
profound
a book full of profound and challenging insights
,
serious
It was a question which deserved serious consideration.
,
deep
a period of deep personal crisis
, ,
philosophical
a philosophical discourse
,
weighty
Surely such weighty matters merit a higher level of debate?
,
meaty
This time she has been given a more meaty role in the film.
, ,
studious
I was a very quiet, studious little girl.
(adjective) 
Definition
showing careful thought
Synonyms
well-thought-out
,
careful
One has to be extremely careful when dealing with these people.
,
cautious
Mr King clearly has a cautious approach to change.
,
deliberate
His movements were gentle and deliberate.
,
wary
Keep a wary eye on children when they are playing near water.
,
discreet
He followed at a discreet distance.
,
prudent
He is taking a prudent and cautious approach.
, ,
canny
He was far too canny to risk giving himself away.
,
mindful
We must be mindful of the consequences of selfishness.
,
circumspect
You should have been more circumspect in your dealings with him.
,
Opposites

Additional synonyms

in the sense of attentive
Definition
considerately helpful
He is a wonderful host and is always attentive to his guests.
in the sense of canny
Definition
shrewd or cautious
He was far too canny to risk giving himself away.
in the sense of careful
Definition
cautious in attitude or action
One has to be extremely careful when dealing with these people.

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Video: pronunciation of 'thoughtful'

Source

Thesaurus for thoughtful from the Collins English Thesaurus
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