Английский словарь американских идиом - kind of

or sort of {adv. phr.}, {informal} Almost but not quite; rather. * /A guinea pig looks kind of like a rabbit, but it has short ears./ * /Bob was kind of tired when he finished the job./ * /The teacher sort of frowned but then smiled./ * /Mary wouldn't tell what she wanted to be when she grew up; it was sort of a secret./