Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
This is confirmed in The Hobbit: The Battle of the Five Armies when Bilbo returns home to find his belongings being auctioned off and is told he was declared dead after being missing for over 13 months.
Source: https://screenrant.com/how-long-bilbo-journey-hobbit-frodo-lotr-comparison/