Using a case example, the authors explore how the counseling field's participation in the discourse of heterosexist dominance fosters microaggressions toward sexual and gender-transgressive minorities. Specifically, the authors deconstruct four linguistic assumptions of the discourse of heterosexist dominance: (a) the sex/gender binary, (b) decontextualized disposition language of homophobia, (c) hierarchical disposition language of affirmation, and (d) gendered pronouns. The authors will also examine how these assumptions influence egalitarian, well-intended counselors and counseling psychologists to engage in microinvalidations of LGB and transgender clients. Implications regarding more effective practice, training, and research will be discussed.