If you describe someone as effusive, you mean that they express pleasure, gratitude, or approval in a very enthusiastic way. He was effusive in his praise for the general + effusively ef·fu·sive·ly She greeted them effusively. showing your good feelings in a very excited way
extravagantly demonstrative; "insincere and effusive demonstrations of sentimental friendship"; "a large gushing female"; "write unrestrained and gushy poetry"