1. (

• total ,
• tot ,
• tot_up ,
• sum ,
• sum_up ,
• summate ,
• tote_up ,
• add ,
• add_together ,
• tally ,
• add_up

) determine the sum of; "Add all the people in this town to those of the neighboring town" ;

2. (

• summate

) form or constitute a cumulative effect ;