Since modern and antiquated are words with opposite meanings, the analogy requires selecting an antonym for weak. The appropriate word is potent, as it means strong.
Additional Details:
Definition of Potent:
It denotes something very powerful, unlike a weight lifter. 'Potent' is used for describing things such as intense odors, highly effective magic potions, and notably influential individuals. Originating from Latin potentum meaning "powerful," it describes having significant strength or influence, whether physical or metaphorical.
Highly Potent Drug:
A very strong medication (like fentanyl, alprazolam, risperidone) produces effects at low doses, whereas a less potent drug (like meperidine, diazepam, ziprasidone) requires higher dosages to produce the same effect. Potency is not necessarily related to the severity of side effects.
Examples of potent:
Overly aware of his presence, she tensed as he sat beside her, the scent overwhelming. The vastness and allure of his empire exerted a potent influence over western Europe.
Potent Smell:
The term potent implies something made remarkably strong, unlike a bodybuilder. Use 'strong' instead to describe items like intense scents, powerful magical concoctions, and persuasive people. Derived from Latin potentum meaning "powerful," it indicates possessing substantial strength or impact physically or figuratively.