Synonyms for implement:
insure, perform, progress, go through with, equip, steamroll, assure, ensure.
adopt, exploit, realize.
actuate, invoke, mount, act out.
Other synonyms and related words:
fulfil, go across, keep, hold, fulfill, go for, enforce, impose, execute, consume, realize, equip, carry out, actuate, mount, devour, carry through, fit, put through, invoke, exploit, mechanism, trowel, administer, discharge, down, weapon, pass, give, put on, lend oneself, DO, go through, utilise, accomplish, experience, follow out, work through, progress, action, perform.
Sense 2 (noun)
ensure, actuate, progress, go through with, realize, exploit, adopt.
Sense 3 (noun)
keep, perform, DO, discharge.
Sense 4 (noun)
agent, tool (noun)
contrivance, machine, contraption, equipment, appliance, apparatus, utensil, gadget, instrument, device.
enforce, go through, put through, carry out.
equipment, contrivance, apparatus, contraption, gizmo, tool, utility, facility, gimcrack, engine, instrument, convenience, widget, utensil, machine, gimmick, device, doodad, appliance, gadget.
exercise, utilize, operate, exert, use, conduct, function, apply, serve, effect, employ, practice.
facilitate, aid, intervene, mediate, expedite.
start, put into action (verb)
execute, fulfill, invoke, realize, enforce, perform, carry out, effect.