gratuitous

GRE tution is not necessary.It's about common sense :P

remember gratuity which is given freely to employee if they complete 5 yrs. or so in the company.

'Gratitude' is can not be measured. It is costless.

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if someone tells you your graduate tuition is free, it would be uncalled for

gratitude means the quality of being thankful, graceful, .. to be gratitude is expressed free of charge, so GRATUITOUS means given or free of charge

if we have gratitude towards someone, then we do anything for them free or without great reason..

GRE tuition from mnemonic dictionary is free

Great Ass....If an ass is available for free its great