Wiktionary
uncousinly
a. Not cousinly.
WordNet
uncousinly
adj. not befitting a cousin [ant: cousinly]
Usage examples of "uncousinly".
Most of the time, after so much practice, I could keep my more uncousinly feelings for Joanna well concealed from her.
In a country which for several years now had been disputed in arms between two very uncousinly cousins, it was no wonder if private enemies and equally acquisitive neighbours joined in the plundering for themselves, independently of either faction.
Cousins, most uncousinly, they tore each other and tore England between them, and yet life must go on, faith must go on, the stubborn defiance of fortune must go on in the husbandry of the year, season after season, plough and harrow and seed, tillage and harvest.