The term 'quite some time' can be expressed in a variety of ways, including 'AWHILE' (6 letters), 'months' (6 letters), 'EON' (3 letters), 'ERA' (3 letters), 'years' (5 letters), 'AGES' (4 letters), 'AEON' (4 letters), and 'a month of Sundays' (15 letters). AWHILE is a period of indeterminate length, while months are a unit of time that is approximately one twelfth of a year. An EON is an immeasurably long period of time, and an ERA is a period of time marked by a distinctive character or a particular feature. Years are a unit of time that is equal to 365 days, and AGES are a long period of time. An AEON is an indefinitely long period of time, and EONS are an indefinitely long period of time. A month of Sundays is a phrase used to describe a very long period of time. All of these terms can be used to express the concept of 'quite some time'.