From ce6663bac33d95022353e0bb4becdf40e3fc5ac1 Mon Sep 17 00:00:00 2001
From: Shine wOng <1551885@tongji.edu.cn>
Date: Thu, 19 Sep 2019 09:46:51 +0800
Subject: [PATCH] update word.md.

---
 words.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/words.md b/words.md
index c3c11a1..af8ac1e 100644
--- a/words.md
+++ b/words.md
@@ -734,3 +734,14 @@ Some Words
 
 	- an ornate gold mirror
 	- an ornate iron staircase
+
++ tentative
+> (adj)not definite or certain, and may be changed later.</br>
+> (adj)done without confidence, hesitant
+
+	- I passed on my tentative conclusions to the police.
+	- The government is taking tentative steps towards tackling the country's economic problems.
+	- Albi knocked tentatively and entered.
+
++ semaphore
+> (n)a system of sending messages using two flags, which you hold in different positions to represent letters and numbers