frequently
He frequently visits the library to prepare for his exams.
頻繁に
occasionally
We occasionally go hiking when the weather is nice.
ときどき
seldom
She seldom makes mistakes in her assignments.
めったに〜ない
intermittently
The signal was received intermittently due to bad weather.
断続的に
promptly
The staff responded promptly to all customer inquiries.
即座に
perpetually
He is perpetually late for morning meetings.
永遠に、絶えず
sporadically
Lightning struck sporadically throughout the night.
散発的に
immediately
The manager immediately addressed the customer's complaint.
直ちに
nowadays
Nowadays, people rely heavily on smartphones.
近頃
eventually
Eventually, she achieved her dream of becoming a doctor.
最終的に