onerousformal

SMART Vocabulary: related words and phrases

Complicated and difficult to do
advanced
ambitious
ambitiously
another
arduous
formidable
formidably
get blood out of/from a stoneidiom
grail
gruelling
onerous
onerously
overdemanding
painstaking
picnic
trickily
tricky
tuff
ultra-sensitive
unintuitive

taxing | American Dictionary

taxing
adjective
us/ˈtæk·sɪŋ/
needing too much effort:
After the surgery, I couldn’t do anything too taxing for a while.