fa-map-signs icon in font awesome icons has 1 variant fas i.e.,solid.
fa-mars-stroke-h icon in font awesome icons has 1 variant fas i.e.,solid.
fa-mars-stroke-v icon in font awesome icons has 1 variant fas i.e.,solid.
fa-medium-m icon in font awesome icons is part of brand (fab) icons
fa-medkit icon in font awesome icons has 1 variant fas i.e.,solid.
fa-meh icon in font awesome icons has 2 variants regular (far) and solid (fas)
fa-meh-blank icon in font awesome icons has 2 variants regular (far) and solid (fas)
fa-meh-rolling-eyes icon in font awesome icons has 2 variants regular (far) and solid (fas)
fa-microphone-alt icon in font awesome icons has 1 variant fas i.e.,solid.
fa-microphone-alt-slash icon in font awesome icons has 1 variant fas i.e.,solid.