Wave dates back to the Old English wafian, meaning “to wave hands”; It is also related to Old English wæfan, “to dress”, and could be donned with wefan, “to weave” (weaving involves up and down movements, similar to shaking, so don`t shake it). The verb rolled on the banks of the English language with meanings related to loose movement back and forth (e.g., “a flag waving in the wind” or “a magician waving a wand”). In the 16th century, sailors began using it to refer to ship signaling by making sweeping movements with their hands raised or with something held in their hands, which is the likely precursor to greeting or saying goodbye (as well as “waving your hands in the air as if you didn`t care” while dancing). Kira Cochrane argued that fourth-wave feminism is “defined by technology” and is particularly characterized by the use of Facebook, Twitter, Instagram, YouTube, Tumblr and blogs like Feministing to challenge misogyny.    In Canada, for example, after the hashtag #MeToo became fashionable in October 2017, hundreds of people began attributing fourth-wave feminists to the movement.  Another hashtag, #AndNow, became popular in Canada thanks to the support of Prime Minister Justin Trudeau. #AndNow supported the discussion on resolving sexual harassment or abuse in the workplace to help people fight for justice for all.  Social media had a reinforcing effect when the fourth wave of the feminist movement began to gain momentum.   2018 would be the year when fourth-wave feminism peaked in Spain, Argentina and Brazil due to a number of different factors, with women mobilized on a large scale to take to the streets.    Their mobilization also called into question for the first time the legitimacy of the Spanish judicial system, whereas in previous waves the focus was more on political leadership and legislative action.
 The wave in Spain would also face a major challenge, including the emergence of Vox, a far-right political party that won seats in Andalusia. Vox opposed the organic law for comprehensive protection against gender-based violence and wanted it annulled.  In Argentina, the culmination would be the issue of abortion rights, where thousands of women took to the streets wearing green headscarves.   British journalist Kira Cochrane and British feminist researcher Prudence Bussey-Chamberlain describe the fourth wave as focusing on justice for women, particularly against sexual harassment (including street harassment), violence against women, discrimination and harassment in the workplace, body shame, sexist images in the media, online misogyny, campus sexual assaults and attacks. in public transport as well as on rape culture. They also support intersectionality, social media activism and online petitions.    Its essence, Chamberlain writes, is “the disbelief that certain attitudes may still exist.”  Events and organizations tackling the fourth wave of feminism include the Everyday Sexism Project, UK Feminista, Reclaim the Night, One Billion Rising, and “a Lose the Lads` mags protest.”  In an Anglosphere feminist context, journalist Pythia Peay argued for the existence of a fourth wave as early as 2005 to focus on social justice and civil rights, and in 2011, Jennifer Baumgardner dated the beginning of the fourth wave to 2008.  Twitter, the most popular social network among 18-29 year olds, was founded in 2006,  Making feminism more accessible and creating a “feminism hashtag.”  n. the intentional and voluntary waiver of something, such as a right, either by explicit declaration or by conduct (e.g., non-enforcement of a right). The problem that may arise is that a waiver can be interpreted as a waiver of the right to enforce the same right in the future.
Example: The holder of a promissory note that allows the debtor to pay many weeks in arrears several times does not agree to waive the due date for future payments. A waiver of a legal claim in court must be registered. London-based author Nikki van der Gaag discusses the harmful effects of boys` privileged education, citing the Advisory Group on Early Childhood Care and Development, “a tendency to favour boys […] does not teach young people responsibility and clarify what is expected of them.”  Fourth-wave feminists began promoting solutions to avoid these problems, such as gender-neutral parenting. Lise Eliot, a professor of neuroscience at Chicago Medical School, points out that infants and growing children are so impressionable that small differences in a child`s upbringing over time can lead to large personality differences, reinforcing gender stereotypes.  At the international level, comparisons between waves can be difficult. First-wave Anglospheric feminism is the second wave for European and Latin American feminists. The second wave of American and British feminism is also the third wave for Europeans and Latin Americans.  Spanish feminism experienced several waves during the Franco era.  As the importance of social media in “creating and maintaining a feminist community” is an increasingly popular idea, “diversity and creativity continue to characterize feminist activism” around the world in the 21st century.  Communities around the world have experienced reflections of “current Internet-based fourth-wave feminism” and explored the difference from it.  Moreover, the growing social power of fourth-wave feminist movements prioritizes these issues for elected governments and encourages them to engage in the “new and youthful feminisms” of modernity.
 One criticism of fourth-wave feminism is that it depends on technology. Ragna Rök Jóns argued that “the main problem facing this 4th wave will be disproportionate access and ownership of digital media devices”. The fourth wave remains with the “inherent classism and ableism” that comes from giving the greatest voice to those who can afford and use technology, while social media growth remains slow in regions plagued by pervasive social injustice.  North American sociologist Amanda E. Vickery argues that fourth-wave feminism marginalizes women of color who struggle for inclusion and neglects the specific injustices they face to make way for the dominant struggle.  Fourth-wave feminists argued that the rise of gender stereotypes puts pressure on men to be breadwinners, as opposed to women who feel compelled to take on the role of housewife.