1. abandon 近义词

discard/ forsake/cast off

2. accumulate

e.g. Formation of a glacier is complete when ice accumulated to a thickness sufficient to make it move slowly under pressure.

3. adverse

e.g. This sharing enables lichens to resist the most adverse environmental conditions found on earth.

4. assemble

e.g. When a food object or nest intruder is too large for an individual to handle, nestmates can be quickly assembled by alarm or recruitment signals.

e.g. The modern factory used power-driven machines and assembly-line techniques to turn out large quantities of well-made goods.

5. avid

e.g. A child is normally nature's avid student

6. barter 

e.g. Then the barter system was replaced by coins.