To come into being; develop.
To change; transform.
Of a population, to acquire or develop (a trait) in the process of biological evolution.
To give off (gas, such as oxygen or carbon dioxide during a reaction).
To move in regular procession through a system.
Of a trait, to develop within a population via biological evolution.
Of a population, to change genetic composition over successive generations through the process of evolution.
To cause something to change or transform.
To maintain (an establishment or institution); to conduct; to manage.
To supply with necessities and financially support (a person).
To refrain from freely disclosing (a secret).
To continue in (a course or mode of action); to not intermit or fall from; to uphold or maintain.
To remain edible or otherwise usable.
To remain in a state.
To observe; to adhere to; to fulfill; to not swerve from or violate.
To raise; to care for.
To have habitually in stock for sale.
To act as wicket-keeper.
To enter (accounts, records, etc.) in a book.
To maintain the condition of; to preserve in a certain state.
To restrain.
To watch over, look after, guard, protect.
To maintain possession of.
To record transactions, accounts, or events in.
To remain faithful to a given promise or word.
To continue.
The state of being kept; hence, the resulting condition; case.
A cap for holding something, such as a journal box, in place.
The food or money required to keep someone alive and healthy; one's support, maintenance.
The main tower of a castle or fortress, located within the castle walls.