sprightly: lively; full of energy. I learned this word from Pooja here. It also shows up in William Wordsworth’s poem, “Along the margin of a bay:/Ten thousand saw I at a glance,/Tossing their heads in sprightly dance.”
bugbear: a cause of obsessive fear, irritation, or loathing. I learned this word from Pooja here.
calisthenics: gymnastic exercises to achieve bodily fitness and grace of movement. I learned this word from Heterodox Buddhist here.
sitch: a situation or state of affairs, usually a bad situation. I learned this word from Bonnyword Manor here. This word is not to be confused with snitch, which means to secretly tell someone in authority that someone else has done something bad, often in order to cause trouble.
plink: a short, sharp, metallic or ringing sound.
tendril: A slender threadlike appendage of a climbing plant. I learned these two words from Bonnywood Manor here.
chuff: (of a steam engine) move with a regular sharp puffing sound.
chuffed: very pleased (British slang). I learned this from Shammi here. This is not to be confused with chaff and chaffed. Chaff means husk as a noun and tease as a verb.
serendipity: the occurrence and development of events by chance in a happy or beneficial way. This is from Herb here.
shill: an accomplice of a hawker, gambler, or swindler who acts as an enthusiastic customer to entice or encourage others. This is from Herb here. I have always wondered how to say this in English and now I know.
stanchion: an upright bar, post, or frame forming a support or barrier. This is from Clayjonz’s cartoon here. We have all seen stanchions and ropes in a hotel lobby to cordon off an area so that people would not enter. I’ve always wondered how to say this.