-tend-, root.
-tend- comes from Latin, where it has the meaning "stretch; stretch out; extend;proceed.''
This meaning is found in such words as: attend, contend, distend, extend, intend, portend, pretend, superintend, tend, tendency, tender, tendon.
Attendance 出席率
They tend to eat at home
prefix "dis-" (apart) with "tend" (to stretch) to
The balloon distends with air
"ex-" (out of or beyond)
She will extend the contract
"pre-" (before) "tend" (to stretch)
employee retention
"por-" (forward)
Dark clouds portend a storm
There’s a tendency for prices to rise