Seriously, not even joking, etc.
Can also be used as my solid word, or even 'your word'(are you serious?). Can be simplified into just 'word'.
1) My word, that's how it happened.
2) It wasn't me, my solid word.
3) That happened yesterday.
My solid word.
3) This coffee is good.
Word. (which means: my word it is)
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