Single
Unmarried
noun, の adjective
Somebody who is alone is single or unmarried.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
私は独身で、婚活中です。とりあえずそんな感じですが、何か他に聞きたいことがあれば、遠慮なくご連絡ください。
I’m single and looking for someone I can marry. That’s really it for now. But please do not hesitate to contact me if you need any further information about me.