As a noun terms
is .
As an interjection thankies is
(hypocoristic|informal|mostly|internet) thank you.
terms
English
Noun
(head)
Statistics
*
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thankies
English
Interjection
(
en interjection)
(hypocoristic, informal, mostly, internet) thank you
References
* Usenet newsgroups: [http://groups.google.co.uk/groups/search?q=%22thankies%22&btnG=Search&sitesearch=groups.google.com]