strong

immune to attack; incapable of being tampered with

of verbs not having standard (or regular) inflection

“`sing' is a strong verb”

of good quality and condition; solidly built

having or wielding force or authority

strong and sure

“gave a strong pull on the rope”

having a strong physiological or chemical effect

freshly made or left

being distilled rather than fermented; having a high alcoholic content

having strength or power greater than average or expected

“a strong radio signal”

not faint or feeble

“a strong odor of burning rubber”