The Dosem numerical system, like most other species, is based on the power of ten. The first ten numbers have their own names, but unlike common, these numbers become paired starting at 10 as opposed to the pairing in Common starting at 20.
| 0 | ant (aah-nt) | 5 | fa (fah) |
| 1 | waa (waah) | 6 | wi (wee) |
| 2 | dwua (d'wah) | 7 | dwi (d'wee) |
| 3 | tra (trah) | 8 | tri (tree) |
| 4 | na (nah) | 9 | ni (nii) |
In stating numbers greater than 9, the names of the numbers in use are strung together, with a "'d" between the numbers indicating a change in place. This, to express the number 278 in Dosem, it is stated as "dwua'd'dwi'd'tri"
Old Dosem includes additional terminology, such as "fi" for the number 10. Modern Dosem state 10 as "waa'd'ant". Common Dosem has also embraced the need for quicker ways to state large numbers, where the highest general number is stated, followed by a "y" (eee) stop, then an indication of the number of zeros that follow. To express 125,000 in Dosem, you would say "waa'd'dwi'd'fa y tra".
Needless to say the Dosem number system is a tad difficult, and making matters worse is that some number combinations can create Dosem that sounds like other valid words.
Old Dosem completely lacked any ability to track or provide a sense of time beyond the generic "morning, afternoon, night". Modern Dosem has at least adapted the words to allow others to schedule meetings and such with them. Being as egotistical as they are, however, they do so in their own language and not Common. EXACT time (usually as provided by a rare watch), express time as a function of their number system. "Sid" indicates AM, "Sod" PM, and a 'z indicates division between hours and minutes. (Dosem rarely concern themselves with seconds, leaving that bothersome task to their human cousins, with whom they feel are far too concerned with saving time than enjoying it.) Thus, to say "9:27 AM" in Dosem, "Sid Ni'zdwad'dwi"
Seasons
Fall: t'cheras
Winter: t'chintsa
Spring: t'choswe
Summer: t'chana
Months
The Dosem, like many other cultures on Thistledown, embraced the Elven calendar. The Dosem, being far faster in spreading out, were one of the first to adapt the calendar. Previously, the Dosem calendar was often determined regionally by members of the religious orders. These older calendars have all since been dropped by most, and no actual record exists of any specific names in use. The Dosem use the Common names for all the months.
Days
Having embraced the Elven calendar, the Dosem quickly set about mucking it up by coming up with their own names for the days of the week per the Dosem number system, with the prefix "ko", as follows:
| 1 | 2 | 3 | 4 | 5 |
| Ko'waa | Ko'dwua | Ko'tra | Ko'na | Ko'fa |
Additionally, the words "Yesterday", "Today", and "Tomorrow" in Dosem are "Koil", "Komahr", and "Koex".
The Dosem, in a strange parallel, use all of the same 26 letters as Common does, though their alphabet is in a completely different order, as follows:
w b x v a j g d s i t y n p e h q c u f m z o k r l
The Dosem often pick names for children that begin with the letters L, M, H, or G.