The "that-it-is" disclosed in Dasein's disposedness
is understood as "an existential attribute of the entity which has Being-in-the-world as its way of being.
Because self-comportment toward entities is essentially sighted in the sense outlined, it always involves perception, and therefore volition and affective disposedness
Attitude, according to the editors of the OED, has as its principal meanings things very different from those I, and I suspect you, use daily: '(1) fitness, adaptation, (2) disposedness
, disposition, posture.