adjective. not cautious or reticent.
adjective. not reserved.
Example sentences of the word unreserved
Members of the House of Representatives may take almost any seat, as most are unreserved.
2. Verb, past participle
Amtrak coach seats may be reserved or unreserved.
3. Verb, past tense
The ship contains first-class cabins, unreserved seating in the dining rooms, a staffed bar, a pool and sauna, an auditorium and an on-board clinic.
4. Noun, singular or mass
Train is the most comfortable way to get between destinations, so long as you don't book tickets in second-class unreserved, which can be quite claustrophobic due to crowding.