thankfulness, thanks, recognition, obligation, appreciation, indebtedness, gratefulness
There are many synonyms for the word "gratitude". Some of which include gratefulness, thankfulness, thanks, appreciation, honor, grateful, and recognition.
It could mean gratitude or acknowledgement, or detection or identification. (Depending on the sentence)
Some synonyms: acknowledgment, benediction, blessing, credit, grace, gratefulness, gratitude, praise, recognition, thank you note, thankfulness, thanksgiving
Gratitude - Gratitude album - was created in 2005.
beholden, gratified, indebted, obliged, pleased, thankfulthankful
There really isn't an opposite, because "thank you" is a polite response. It is possible to add a sarcastic tone, creating the opposite of sincere gratitude. The opposite of a "thank you" (response in gratitude) could be a rebuke, repudiation, or denunciation.
depth of gratitude
You have my unending gratitude.
Gratitude
The usual preposition is "for" (gratitude for, grateful for). Gratitude expressed toward a person is "to" that person.
"I showed gratitude to my mother by taking her out to dinner on Mother's Day."
It is "la gratitude" (fem.)