One hundred thousand embarked on vacation to get hammered (6)
I believe the answer is:
tonked
'hammered' is the definition.
Both the answer and definition are past participle verbs.
Maybe you can see an association between them that I can't see?
'one hundred thousand embarked on vacation' is the wordplay.
'one hundred' becomes 'ton' (ton can informally mean a hundred).
'thousand' becomes 'K' (synonyms).
'on vacation' means to remove the middle letters (after the inside letters have vacated the word).
'embarked' with its centre removed is 'ed'.
'ton'+'k'+'ed'='TONKED'
'to get' is the link.
Can you help me to learn more?
(Another definition for tonked that I've seen is " hit hard".)