unsuitable

adj. inappropriate, unfitting, incompatible, improper

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Adjective
1. not meant or adapted for a particular purpose; "a solvent unsuitable for use on wood surfaces"
(similar) unfit
2. not capable of being applied; "rules inapplicable to day students"
(synonym) inapplicable
(similar) irrelevant
3. not conducive to good moral development; "the movie is unsuitable for children"
(similar) bad
4. not worthy of being chosen (especially as a spouse)
(synonym) undesirable
(similar) ineligible
5. not appropriate for a purpose or occasion; "unsuitable attire for the office"; "said all the wrong things"
(synonym) improper, wrong
(similar) inappropriate

příd.jm. nevhodný

Przym. nieodpowiedni

jiu3 feng2 zhi1 ji3 qian1 bei1 shao3, hua4 bu4 tou2 ji1 ban4 ju4 duo1
When meeting a close friend, thousand cups are still too few. When words don't fit the occasion, half a sentence is too much.
(No further explanation)