free (of charge)

so as not to; so as to avoid

to be saved from; to be spared (something)

immunity (to disease)

to avoid suffering; to prevent (sth bad); to protect against (damage); immunity (from prosecution); freedom (from pain, damage etc); exempt from punishment

to avert; to prevent; to avoid; to refrain from

in order to avoid; so as not to

to pardon; to absolve; to exempt from punishment

(idiom) inevitable; unavoidable

to exempt; exemption