oc·cur 
/əˈkɚ/ verb
oc·curs; oc·curred; oc·cur·ring /əˈkɚ/ verb [no obj] 1 somewhat formal : to happen
▪ The event is scheduled to occur at noon tomorrow. ▪ No one was ready for what was about to occur. ▪ There's a chance that a similar event will occur in the future. ▪ The disease tends to occur in children under the age of five. 2 formal : to appear or exist : to be found
▪ The plant occurs naturally throughout South America. ▪ a naturally occurring compound/chemical/substance
▪ The event is scheduled to occur at noon tomorrow. ▪ No one was ready for what was about to occur. ▪ There's a chance that a similar event will occur in the future. ▪ The disease tends to occur in children under the age of five.
▪ The plant occurs naturally throughout South America. ▪ a naturally occurring compound/chemical/substance
occur to [phrasal verb]
occur to (someone) : to be thought of by (someone)
▪ An idea just occurred to me. [=I just had an idea] ▪ It suddenly occurred to me that there was a simpler way to deal with the problem. ▪ Did it ever occur to you [=did you ever think] that maybe you were wrong? ▪ It never occurred to me to ask. [=I never thought of asking]
▪ An idea just occurred to me. [=I just had an idea] ▪ It suddenly occurred to me that there was a simpler way to deal with the problem. ▪ Did it ever occur to you [=did you ever think] that maybe you were wrong? ▪ It never occurred to me to ask. [=I never thought of asking]
