strong

strong - adjective

having strength or power greater than average or expected
having a strong physiological or chemical effect
not faint or feeble
having or wielding force or authority
immune to attack; incapable of being tampered with
of good quality and condition; solidly built
of verbs not having standard (or regular) inflection
being distilled rather than fermented; having a high alcoholic content
freshly made or left
strong and sure

strong - thesaurus

firm hard impregnable inviolable potent secure solid stiff substantial unassailable unattackable warm