Sundaylike adjective1 •Resembling or characteristic of a Sunday, especially in terms of the religious observances and abstinence from work of the Christian Sabbath.Hence the un-Sundaylike demeanor of the procession, for few towns hold it more unseemly to stand and stare at passers-by, especially on the Sabbath. — 1905 formsmore Sundaylike · most Sundaylike
