The initial idioms of the letter T

test out	test the water
test the waters	testify
testify against	testify for
testify to	tête à tête
tether	TF
TFS	TGIF
TGIT	Thames
than	than the average bear
thank	thank for
thank God	Thank God for small favors
thank goodness	Thank goodness!
thank heavens	thank lucky stars
thank one's lucky stars	Thank you
thanks	thank you for a lovely evening
thank you for a lovely time	Thank you for calling