Third-person singular simple present indicative form of weaken.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "weakens" in a sentence
"Even if this abuse of the phrase weakens its symbolism, an outright renunciation of the phrase retains its symbolism justfine."
"Sin weakens the strength, the root, of a people, so that they are easily rooted up; it defaces the beauty, the blossoms, of a people, and takes away the hopes of fruit."
"The severity and coverage of storms and strong winds in the D.C. area depends on how fast or slow the front weakens, which is hard to say."