often

Synonyms
1, 2. repeatedly, customarily. Often, frequently, generally, usually refer to experiences that are customary. Often and frequently may be used interchangeably in most cases, but often implies numerous repetitions and, sometimes, regularity of recurrence: We often go there; frequently suggests especially repetition at comparatively short intervals: It happens frequently. Generally refers to place and means universally: It is generally understood. He is generally liked; but it is often used as a colloquial substitute for usually. In this sense, generally, like usually, refers to time, and means in numerous instances. Generally, however, extends in range from the merely numerous to a majority of possible instances; whereas usually means practically always: The train is generally on time. We usually have hot summers.

Antonyms
1, 2. seldom.

Pronunciation note
Often was pronounced with a t-sound until the 17th century, when a pronunciation without the  /t/ Show Spelled[t] Show IPA came to predominate in the speech of the educated, in both North America and Great Britain, and the earlier pronunciation fell into disfavor. Common use of a spelling pronunciation has since restored the  /t/[t] for many speakers, and today  /ˈɔfən/[aw-fuhn] and  /ˈɔftən/[awf-tuhn] [or  /ˈɒfən/[of-uhn] and  /ˈɒftən/[of-tuhn]] exist side by side. Although it is still sometimes criticized, often with a /t/[t] is now so widely heard from educated speakers that it has become fully standard once again.