Resembling or having the characteristics of a mob; disorderly, tumultuous; crowded. Also (usually depreciative): characteristic of or appealing to the common people.
Origin
Late 17th century. From mob + -ish.
Definition of mobbish in US English:
mobbish
adjectiveˈmɒbɪʃ
Resembling or having the characteristics of a mob; disorderly, tumultuous; crowded. Also (usually depreciative): characteristic of or appealing to the common people.