denoting or relating to a single person or thing; specific
the particular person I had in mind
worthy of notice; special, unusual
nothing there of particular importance
detailed or exact
concerned over or attentive to details; meticulous
hard to please; exacting
very particular about their food
said of a proposition in logic: predicating a term of some but not all members of a specified class: compare universal1 (4)
[Middle English particuler via French from late Latin particularis of a small part, from Latin particula: see particle]