acongojar - to distress, to grieve
acotar - to mark off, to make marginal notes or citations
acrecentar - to increase
actualizar - to update
adherir - to adhere, to stick
adolecer - to suffer, to lack
adormecer - to make sleepy, to fall asleep, to turn numb
aducir - to adduce
afectar - to affect, to pretend, to feign