"demanding" in the verb sense
request urgently and forcefully
"The victim's family is demanding compensation"
"The boss demanded that he be fired immediately"
"She demanded to see the manager"
2. necessitate, ask, postulate, need, require, take, involve, call for, demand
require as useful, just, or proper
"It takes nerve to do what she did"
"success usually requires hard work"
"This job asks a lot of patience and skill"
"This position demands a lot of personal sacrifice"
"This dinner calls for a spectacular dessert"
"This intervention does not postulate a patient's consent"
3. demand, exact
claim as due or just
"The bank demanded payment of the loan"
lay legal claim to
summon to court
ask to be informed of
"I demand an explanation"
"demanding" in the adjective sense
requiring more than usually expected or thought due especially great patience and effort and skill
"found the job very demanding"
"a baby can be so demanding"
Source: WordNet® (An amazing lexical database of English)
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