(1)	'become'	Ћн стђл врачћм.	He became a doctor.
(2)	'start'	Ћн стђл читђть.	He started to read.
(3)	'go stand'	Ћн стђл у окнђ.	He went and stood by the window.
When negated, this verb can be used as a kind of auxiliary verb, with the meaning 'won't, won't bother to, won't take the trouble to', as in the above conversation. Here is an example in the past tense:
(4)	'decide not to'	Ћн не стђл спћрить.	He didn't [bother to] argue.