Often, means frequently, or many times/ seldom, means rarely or not many times. Often and seldom are antonyms.
The analogy for "seldom" would be "frequently : seldom :: often : rarely." In this analogy, "frequently" is the opposite of "seldom," just as "often" is the opposite of "rarely." "Seldom" means not occurring often or rarely, making "frequently" the appropriate analogy term.
Black is to white as seldom is to often.
The word often is an antonym (opposite) of seldom, and has a silent 't'.
White is to black as seldom is to often.
White is to black as seldom is to OFTEN (or FREQUENTLY).
Often
No, often and seldom are not the same. "Often" means something happens frequently or regularly, while "seldom" means something happens rarely or infrequently.
Not often.
it means not very often
Two rectangles are seldom but sometimes similar. They can be but they don't have to.
Not often; rarely
Often