Sarcastically
/sɑːrˈkæstɪkli/
Definition 1 of 1
Pro Tip 1/3Opposite Meaning
Used when the literal meaning of the words is the opposite of the intended message. 
After tripping, she said sarcastically, 'Well, that was graceful.'
Pro Tip 2/3Verbal Irony
Often synonymous with verbal irony, where the speaker's intended meaning differs from the words. 
Looking at the pouring rain, he said sarcastically, 'What lovely weather for a picnic!'
Pro Tip 3/3Tone of Voice
Tone or intonation often indicates sarcasm more than the actual words spoken. 
'Oh, fantastic,' she said sarcastically as her phone battery died.