sincere

As a proper noun sin

is china.

As an adjective sincere is

sincere.

As adjectives the difference between playful and sincere

is that playful is liking play, prone to play frequently, such as a child or kitten; rather sportive while sincere is genuine; meaning what one says or does; heartfelt.

As adjectives the difference between real and sincere

is that real is true, genuine, not merely nominal or apparent while sincere is genuine; meaning what one says or does; heartfelt.

As an adverb real

is really, very.

As a noun real

is a commodity; see reality.

As a proper noun Real

is Real Madrid, a football club from Madrid.

As adjectives the difference between solemn and sincere

is that solemn is deeply serious and somber while sincere is genuine; meaning what one says or does; heartfelt.

As adjectives the difference between right and sincere

is that right is straight, not bent while sincere is genuine; meaning what one says or does; heartfelt.

As an adverb right

is on the right side.

As an interjection right

is yes, that is correct; I agree.

As a noun right

is that which complies with justice, law or reason.

As a verb right

is to correct.

As adjectives the difference between ardent and sincere

is that ardent is full of ardor; fervent, passionate while sincere is genuine; meaning what one says or does; heartfelt.

Simple is a synonym of sincere.

As adjectives the difference between simple and sincere

is that simple is uncomplicated; taken by itself, with nothing added while sincere is sincere.

As a noun simple

is (medicine) a preparation made from one plant, as opposed to something made from more than one plant.

As a verb simple

is (transitive|intransitive|archaic) to gather simples, ie, medicinal herbs.

As an adjective sincere

is sincere.

As a noun truth is

the state or quality of being true to someone or something.

As a verb truth is

(obsolete|transitive) to assert as true; to declare, to speak truthfully.

As adjectives the difference between considerate and sincere

is that considerate is consciously thoughtful and observant (often of other people); caring while sincere is genuine; meaning what one says or does; heartfelt.

As adjectives the difference between sincere and eager

is that sincere is genuine; meaning what one says or does; heartfelt while eager is sharp; sour; acid.

As a noun eager is

alternative form of lang=en (tidal bore).