Antonym: customary. Similar words: occasionally, on occasion, professional, congressional, invasion, national, regional, missionary. Meaning: [ə'keɪʒənl] 
adj. 1. occurring from time to time 2. occurring or appearing at usually irregular intervals 3. occuring from time to time.
adj. 1. occurring from time to time 2. occurring or appearing at usually irregular intervals 3. occuring from time to time. 
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241. Using his photographs only as an occasional reference point, or to reflect a mood, Vuillard recomposed his subjects at will.
242. The event is ore earthquake of rock burst type related to coal mine exploitation and mining activity, the micro-earthquake swarms belong to occasional local stress releasing.
243. A few small villages and an occasional roadhouse nestled in the forest's shadow.
244. Maxim is clearly a power user of the rhncfg functionality, but hacking code is only an occasional thing for him.
245. In his photographs unexpected camera angles and dramatic chiaroscuro effects transform the occasional squalor and chaos of the actual events into powerful dream-like images.
More similar words: occasionally, on occasion, professional, congressional, invasion, national, regional, missionary, educational, additional, functional, nationalism, traditional, conventional, traditionally, international, institutional, instructional, organizational, constitutional, casino, cast aside, personal, personally, occupation, on a large scale, version, tension, mission, mansion.