Jane: Well, we're off. Be back in a week. Mary: Okay, have fun. Be good. Jane: Do I have to?
•Tom: Bye. Be good. Bill: See you next month.
Dictionary of American idioms. 2013.
Good — Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth.… … The Collaborative International Dictionary of English
Good breeding — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good cheap — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good consideration — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good fellow — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good folk — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good for nothing — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good Friday — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good humor — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good humor man — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
Good nature — Good Good, a. [Compar. {Better}; superl. {Best}. These words, though used as the comparative and superlative of good, are from a different root.] [AS. G[=o]d, akin to D. goed, OS. g[=o]d, OHG. guot, G. gut, Icel. g[=o][eth]r, Sw. & Dan. god, Goth … The Collaborative International Dictionary of English
