adj.
Pronunciation: ( ˌ )in- ' vä-l ə n- ˌ ter- ē , - ˌ te-r ē
Function: adjective
Etymology: Middle English involuntari, from Late Latin involuntarius, from Latin in- + voluntarius voluntary
Date: 15th century
1 : done contrary to or without choice
2 : COMPULSORY
3 : not subject to control of the will : REFLEX
– in · vol · un · tari · ly \ - ˌ vä-l ə n- ' ter- ə -l ē , - ' te-r ə - \ adverb
– in · vol · un · tari · ness \ - ' vä-l ə n- ˌ ter- ē -n ə s, - ˌ te-r ē - \ noun