I. ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
Etymology: panty + waist
1. : a child's garment consisting of short pants buttoned to a waist
2. : sissy
II. adjective
: childish , infantile : sissified
the round robin of abuse which enlivened belles lettres before they went pantywaist in the twentieth century — Richard Hanser