give sth the thumbs down

Absolutely not! I beg to differ I think not I'm damned if No fear! Not on your nelly! Nothing doing. Perish the thought! Stuff and nonsense! absolutely agin agree to disagree back down back out of be at odds

الموافقة والقبول والإقرار التأكيد والجزم والتشديد الدحض والتفنيد