To exasperate is defined as to cause someone to become greatly irritated or annoyed.(verb)
When you repeatedly poke someone while whining and yelling at him, this is an example of a situation where you are likely to exasperate him.
See exasperate in Webster's New World College Dictionary
Origin: < L exasperatus: see exasperate
See exasperate in American Heritage Dictionary 4
transitive verb ex·as·per·at·ed, ex·as·per·at·ing, ex·as·per·ates
Origin: Latin exasperāre, exasperāt-
Origin: : ex-, intensive pref.; see ex-
Origin: + asperāre, to make rough (from asper, rough).
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