giving additional help or support
supplementary
Cases of word usage
1) used with 'I' and 'we' as an auxiliary to form the future tense: 'I shall come as soon as I can' (shall)
2) the mental power by which a person can direct thoughts and actions, and influence those of others; energy, enthusiasm; the control exercised over oneself, one's desires etc; determination; (used as an auxiliary to form the future tense) (will)