considerable

Synonyms: ample appreciable astronomical big bountiful comfortable commodious extensive goodly great hefty huge large-scale lavish major marked much noticeable plentiful pretty reasonable respectable sizable substantial tidy tolerable

Antonyms: inconsiderable insignificant little slight small undistinguished unnoticeable

Synonyms: big consequential distinguished doozie dynamite essential fab fat influential material meaningful momentous mondo noteworthy renowned significant solid gold something something else substantial super super-duper to the max unreal venerable weighty

Antonyms: insignificant unimportant unnoteworthy unnoticeable