だせー Japanese meaning | KotomoraMeanings
1
expression
uncool; lame; tacky
colloquial
Colloquial exclamation derived from ダサい, used to call something or someone uncool, lame, or tacky. Often used in casual, youthful speech.
See also: ダサい
Etymology
Colloquial emphatic form of ダサい (uncool, lame), with elongated vowel and sometimes geminated consonant for added force.