加 - add, addition, increase

to add; to add up; to sum up; to append; to annex

pressurization; applying pressure (to)

food additive

perpetrator; wrong-doer; aggressor; assailant; offender; at-fault party (e.g. in an accident)

additive

addition; annexing

to be added to; to be appended

joining (a club, organization, etc.); becoming a member; entry; admission; subscription; affiliation; signing (e.g. a treaty); taking out (insurance)

heavy additional tax(ation)

weighting (in averaging); aggravation

participation; joining; entry

participant; entrant; player; competitor