冗談気味
Meanings
1
half-joking; somewhat joking; in a jocular vein
Describes a statement or manner that is partly serious and partly joking, often with a light, teasing tone. Commonly used as 冗談気味に言う or 冗談気味の口調.
He said half-jokingly, 'I might quit.'
It was a half-joking tone, but I could see a bit of his true feelings.