fastidious

1 ENTRIES FOUND:
fastidious /fæˈstɪdijəs/ adjective
fastidious
/fæˈstɪdijəs/
adjective
Britannica Dictionary definition of FASTIDIOUS
[more fastidious; most fastidious]
1 
: very careful about how you do something
2 
: liking few things : hard to please
3 
: wanting to always be clean, neat, etc.

— fastidiously

adverb

— fastidiousness

noun [noncount]