IPA: /ˌʌnˈdɛviˌeɪtɪŋ/
KK: /ʌnˈdɛviˌeɪtɪŋ/
Something that is steady and does not change or turn aside from a path or direction.
Her undeviating commitment to her goals inspired everyone around her.
Undeviating → It is formed from "un-" (meaning not) and "deviate" (from Latin "deviatus", meaning to turn aside). The word "undeviating" means not turning aside or remaining straight and true in direction.
Think of 'not' ('un-') turning aside ('deviate') — that's why undeviating means staying on a straight path.