to refuse /rɪˈfjuːz/ /ˌriːˈfjuːz/
to decline /dɪˈklaɪn/ /dɪˈklaɪn/
to reject /ˈriʤɛkt/ /ˈriːʤɛkt/
to turn down /tɜrn daʊn/ /tɜːn daʊn/
to avoid /əˈvɔɪd/ /əˈvɔɪd/
to abstain /əbˈsteɪn/ /əbˈsteɪn/